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Leibin IV, Bezrukov DS, Buchachenko AA. Trapping and thermal migration of the first- and second-row atoms in Ar, Kr and Xe crystals. Phys Chem Chem Phys 2024; 26:958-973. [PMID: 38088087 DOI: 10.1039/d3cp04178f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
Trapping and temperature-induced migration (TIM) of the first- and second-row atoms A from H to Ne in the face-centered cubic rare gas RG = Ar, Kr and Xe crystals are investigated within the classical crystal model parameterized by the empirically modified pairwise potentials. New ab initio coupled cluster A-RG potentials computed in a uniform way for all the atoms A are used to represent the atom-crystal interactions. Absolute and relative stabilities of the substitutional and interstitial trapping sites, their structures, interstitial migration pathways, related activation energies and rough estimates of the TIM rates are obtained. The isotropic model, which neglects non-zero atomic electronic orbital momentum, reveals that migration of interstitial atoms along the network of conjugated fcc octahedral voids is the generic case for atomic mobility. Anisotropic interactions with a crystal inherent to P-state atoms B, C, O and F are accounted for using the non-relativistic diatomics-in-molecule method. Depending on its sign, interaction anisotropy can alter the structures of interstitial trapping sites and transition states remarkably. This, in turn, can dramatically affect the TIM rates. Comparison with reliable experimental data available for oxygen and hydrogen indicates a systematic overestimation of the measured activation energies, by 30% at worst. A comprehensive literature review accomplished for other atoms reveals a lack of information on the TIM processes and rates, though makes it possible to verify a part of the present results on the trapping site energies and structures.
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Affiliation(s)
- Iosif V Leibin
- Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Moscow 121205, Russia.
| | - Dmitry S Bezrukov
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Alexei A Buchachenko
- Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Moscow 121205, Russia
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2
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Leibin IV, Bezrukov DS, Buchachenko AA. Trapping and migration of P-state atoms in rare gas solids: effect of angular momentum anisotropy for model O(3P) and C(3P) atoms. Mol Phys 2021. [DOI: 10.1080/00268976.2021.1995633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- I. V. Leibin
- Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Moscow, Russia
| | - D. S. Bezrukov
- Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Moscow, Russia
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - A. A. Buchachenko
- Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Moscow, Russia
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3
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de Oliveira RM, Machado de Macedo LG, da Cunha TF, Pirani F, Gargano R. A Spectroscopic Validation of the Improved Lennard-Jones Model. Molecules 2021; 26:3906. [PMID: 34206733 PMCID: PMC8271504 DOI: 10.3390/molecules26133906] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 06/21/2021] [Accepted: 06/24/2021] [Indexed: 11/17/2022] Open
Abstract
The Lennard-Jones (LJ) and Improved Lennard-Jones (ILJ) potential models have been deeply tested on the most accurate CCSD(T)/CBS electronic energies calculated for some weakly bound prototype systems. These results are important to plan the correct application of such models to systems at increasing complexity. CCSD(T)/CBS ground state electronic energies were determined for 21 diatomic systems composed by the combination of the noble gas atoms. These potentials were employed to calculate the rovibrational spectroscopic constants, and the results show that for 20 of the 21 pairs the ILJ predictions agree more effectively with the experimental data than those of the LJ model. The CCSD(T)/CBS energies were also used to determine the β parameter of the ILJ form, related to the softness/hardness of the interacting partners and controlling the shape of the potential well. This information supports the experimental finding that suggests the adoption of β≈9 for most of the systems involving noble gas atoms. The He-Ne and He-Ar molecules have a lifetime of less than 1ps in the 200-500 K temperature range, indicating that they are not considered stable under thermal conditions of gaseous bulks. Furthermore, the controversy concerning the presence of a "virtual" or a "real" vibrational state in the He2 molecule is discussed.
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Affiliation(s)
| | | | | | - Fernando Pirani
- Dipartimento di Chimica, Biologia e Biotecnologie, Universitá degli studi di Perugia, via Elce di Sotto 8, 06123 Perugia, Italy;
- Istituto CNR di Scienze e Tecnologie Chimiche (CNR-SCITEC), via Elce di Sotto 8, 06123 Perugia, Italy
| | - Ricardo Gargano
- Instituto de Física, Universidade de Brasília, Brasília, DF 70910-900, Brazil
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Leibin IV, Kalinina IS, Bezrukov DS, Buchachenko AA. Modeling of the thermal migration mechanisms of atomic oxygen in Ar, Kr, and Xe crystals. J Chem Phys 2021; 154:044305. [PMID: 33514093 DOI: 10.1063/5.0038294] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Accommodation and migration of the ground-state (2s22p4 3P) oxygen atom in the ideal Ar, Kr, and Xe rare gas crystals are investigated using the classical model. The model accounts for anisotropy of interaction between guest and host atoms, spin-orbit coupling, and lattice relaxation. Interstitial and substitutional accommodations are found to be the only thermodynamically stable sites for trapping atomic oxygen. Mixing of electronic states coupled to lattice distortions justifies that its long-range thermal migration follows the adiabatic ground-state potential energy surface. Search for the migration paths reveals a common direct mechanism for interstitial diffusion. Substitutional atoms are activated by the point lattice defects, whereas the direct guest-host exchange meets a higher activation barrier. These three low-energy migration mechanisms provide plausible interpretation for multiple migration activation thresholds observed in Kr and Xe free-standing crystals, confirmed by reasonable agreement between calculated and measured activation energies. An important effect of interaction anisotropy and a minor role of spin-orbit coupling are emphasized.
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Affiliation(s)
- Iosif V Leibin
- Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Moscow 121205, Russia
| | - Inna S Kalinina
- Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Moscow 121205, Russia
| | - Dmitry S Bezrukov
- Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Moscow 121205, Russia
| | - Alexei A Buchachenko
- Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Moscow 121205, Russia
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5
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Kleshchina NN, Kalinina IS, Leibin IV, Bezrukov DS, Buchachenko AA. Stable axially symmetric atomic impurity in an fcc solid-Ba in rare gases. J Chem Phys 2019; 151:121104. [PMID: 31575194 DOI: 10.1063/1.5118876] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Closed-shell metal atoms in rare gas solids tend to occupy highly symmetric polyhedral crystal sites, as follows from the generic triplet Jahn-Teller splitting of the S → P excitation bands and complies with the isotropic nature of the dispersion forces. Atypical 2 + 1 Jahn-Teller splitting inherent to axially symmetric sites observed recently for Ba atoms has been therefore interpreted as the defect accommodation. By modeling the structure, stability, and spectra of the Ba atom in the face-centered cubic rare gas crystals, we identify thermodynamically stable crystal site of axial C3v symmetry that explains experimental observations. We also demonstrate the dramatic effect of the interaction anisotropy on the trapping site structure and stability for an excited P-state atom. Our results provide strong evidence for stable axially symmetric accommodation of isotropic impurity in a close-packed lattice.
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Affiliation(s)
- Nadezhda N Kleshchina
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Inna S Kalinina
- Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Moscow 121205, Russia
| | - Iosif V Leibin
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Dmitry S Bezrukov
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Alexei A Buchachenko
- Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Moscow 121205, Russia
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6
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Ozerov GK, Bezrukov DS, Buchachenko AA. Accommodation of a dimer in an Ar-like lattice: exploring the generic structural motifs. Phys Chem Chem Phys 2019; 21:16549-16563. [PMID: 31313774 DOI: 10.1039/c9cp02119a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A global optimization strategy is applied to Lennard-Jones models describing the stable trapping sites of a dimer in the face-centered cubic Ar-like lattice. Effective volumes of the trapping sites, quantified as the number of host atoms dislodged from the lattice, are mapped onto the parameter space defined by the strength and range of the dimer interaction potentials. The two models considered differ in the host-guest interaction and give very different maps that reflect the effect of local lattice relaxation. A hierarchical complete-linkage clustering technique is applied to identify generic structural types of the dimer accommodations. The dominant types found and enlisted maintain the symmetry of the isolated dimer and possess high tetrahedral and octahedral symmetry of the host environment with respect to the dimer atoms or center and can be roughly classified as the "whole" or "per atom" dimer accommodations. The results are compared to the analysis of the analogous model for trapped atoms and realistic model for trapped alkaline-earth metal dimers. Implications for matrix isolation spectroscopy are discussed.
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Affiliation(s)
- Georgiy K Ozerov
- Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Nobel str. 3, Moscow 121205, Russia
| | - Dmitry S Bezrukov
- Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Nobel str. 3, Moscow 121205, Russia and Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Alexei A Buchachenko
- Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Nobel str. 3, Moscow 121205, Russia
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7
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Bezrukov DS, Kleshchina NN, Kalinina IS, Buchachenko AA. Empirically Modified Potentials of Interaction between Rare Gases for Matrix Isolation Problems. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2019. [DOI: 10.1134/s003602441908003x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Janeček I, Stachoň M, Gadea FX, Kalus R. Fragmentation of Kr N+ clusters after electron impact ionization II. Long-time dynamics simulations of Kr 7+ evolution and the role of initial electronic excitation. Phys Chem Chem Phys 2018; 19:25423-25440. [PMID: 28895597 DOI: 10.1039/c7cp03940a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Long time simulations, up to 100 ns, have been performed for the fragmentation of Kr7+ clusters after electron impact ionization. They rely on DIM approaches and hybrid non-adiabatic dynamics combining mean field and decoherence driven either by Tully fewest switches (TFS) algorithm or through electronic amplitude (AMP) calculations. With both methods, for the first time, when the initial electronic excited state belongs to group II correlating to P1/2 atomic ions, the fragmentation ratio in mainly monomer and dimer ions agrees very well with known experimental results. A complex non-adiabatic dynamics is found where initial neutral monomer evaporations due to gradual deexcitation over electronic states of group II are followed by a non-adiabatic transition across a wide energy gap of the spin-orbit origin to electronic states of group I. The resulting excess of kinetic energy causes the final fragmentation of charged intermediate fragments to stable ionic monomers or dimers. Characteristic times of these processes have been estimated. The kinetic energy distribution of the neutral and ionic monomers (the dominating final fragments) has been analyzed in detail. Interestingly they exhibit some signature of the initial excited electronic state which could allow for an experimental identification.
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Affiliation(s)
- Ivan Janeček
- Institute of Geonics of the AS CR, v.v.i., and Institute of Clean Technologies for Mining and Utilization of Raw Materials for Energy Use, Studentská 1768, 708 00 Ostrava, Czech Republic.
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9
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Segarra-Martí J, Garavelli M, Aquilante F. Converging many-body correlation energies by means of sequence extrapolation. J Chem Phys 2018; 148:034107. [DOI: 10.1063/1.5000783] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
- J. Segarra-Martí
- Laboratoire de Chimie UMR 5182, ENS de Lyon, 46 Allée d’Italie, 69364 Lyon Cedex 07, France
| | - M. Garavelli
- Dipartimento di Chimica Industriale “Toso Montanari,” Università di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - F. Aquilante
- Dipartimento di Chimica “Giacomo Ciamician,” Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy
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10
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Song B, Waldrop JM, Wang X, Patkowski K. Accurate virial coefficients of gaseous krypton from state-of-the-art ab initio potential and polarizability of the krypton dimer. J Chem Phys 2018; 148:024306. [PMID: 29331117 DOI: 10.1063/1.5006970] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We have developed a new krypton-krypton interaction-induced isotropic dipole polarizability curve based on high-level ab initio methods. The determination was carried out using the coupled-cluster singles and doubles plus perturbative triples method with very large basis sets up to augmented correlation-consistent sextuple zeta as well as the corrections for core-core and core-valence correlation and relativistic effects. The analytical function of polarizability and our recently constructed reference interatomic potential [J. M. Waldrop et al., J. Chem. Phys. 142, 204307 (2015)] were used to predict the thermophysical and electromagnetic properties of krypton gas. The second pressure, acoustic, and dielectric virial coefficients were computed for the temperature range of 116 K-5000 K using classical statistical mechanics supplemented with high-order quantum corrections. The virial coefficients calculated were compared with the generally less precise available experimental data as well as with values computed from other potentials in the literature {in particular, the recent highly accurate potential of Jäger et al. [J. Chem. Phys. 144, 114304 (2016)]}. The detailed examination in this work suggests that the present theoretical prediction can be applied as reference values in disciplines involving thermophysical and electromagnetic properties of krypton gas.
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Affiliation(s)
- Bo Song
- Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Jonathan M Waldrop
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, USA
| | - Xiaopo Wang
- Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Konrad Patkowski
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, USA
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11
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Asselin P, Turner AC, Bruel L, Brenner V, Gaveau MA, Mons M. Rovibrational laser jet-cooled spectroscopy of SF 6–rare gas complexes in the ν3 region of SF 6. Phys Chem Chem Phys 2018; 20:28105-28113. [DOI: 10.1039/c8cp04387f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High resolution infrared laser jet-cooled spectroscopy provides accurate structural data of 1 : 1 SF6–Rg heterodimers and describes quantitatively the intermolecular interaction model between SF6 and a rare gas atom.
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Affiliation(s)
| | - Andrew C. Turner
- Department of Earth and Planetary Science
- University of California
- Berkeley
- USA
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12
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Sheng X, Qian S, Hu F. Van der Waals potential and vibrational energy levels of the ground state radon dimer. Chem Phys 2017. [DOI: 10.1016/j.chemphys.2017.06.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Kleshchina NN, Korchagina KA, Bezrukov DS, Buchachenko AA. Modeling of Manganese Atom and Dimer Isolated in Solid Rare Gases: Structure, Stability, and Effect on Spin Coupling. J Phys Chem A 2017; 121:2429-2441. [PMID: 28263615 DOI: 10.1021/acs.jpca.6b12444] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Structures and energies of the trapping sites of manganese atom and dimer in solid Ar, Kr, and Xe are investigated within the classical model, which balances local distortion and long-range crystal order of the host and provides a means to estimate the relative site stabilities. The model is implemented with the additive pairwise potential field based on the ab initio and best empirical interatomic potential functions. In agreement with experiment, Mn single substitution (SS) and tetrahedral vacancy (TV) occupation are identified as stable for Ar and Kr, whereas the SS site is only found for Xe. Stable trapping sites of the weakly bound Mn2 dimer are shown to be the mergers of SS and/or TV atomic sites. For Ar, (SS + SS) and (TV + TV) sites are close in energy, whereas (SS + TV) site lies higher. The (SS + SS) accommodation is identified as the only stable site in Kr and Xe at low energies. The results are compared with the resonance Raman, electron spin resonance, and absorption spectroscopy data. Reproducing the numbers of stable sites, the calculations tend to underestimate the matrix effect on the dimer vibrational frequency and spin-spin coupling constant. Nonetheless, the level of agreement is found to be informative for tentative assignments of the complex features seen in Mn2 matrix isolation spectroscopy.
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Affiliation(s)
- Nadezhda N Kleshchina
- Department of Chemistry, M. V. Lomonosov Moscow State University , Moscow 119991, Russia
| | - Kseniia A Korchagina
- Department of Chemistry, M. V. Lomonosov Moscow State University , Moscow 119991, Russia
| | - Dmitry S Bezrukov
- Department of Chemistry, M. V. Lomonosov Moscow State University , Moscow 119991, Russia.,Skolkovo Institute of Science and Technology , Skolkovo Innovation Center, Building 3, Moscow 143026, Russia
| | - Alexei A Buchachenko
- Skolkovo Institute of Science and Technology , Skolkovo Innovation Center, Building 3, Moscow 143026, Russia
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14
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Janeček I, Naar P, Stachoň M, Gadea FX, Kalus R. Fragmentation of KrN+ clusters after electron impact ionization. Short-time dynamics simulations and approximate multi-scale treatment. Phys Chem Chem Phys 2017; 19:2778-2790. [DOI: 10.1039/c6cp07479k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Post-ionization fragmentation of small ionic krypton clusters, KrN+ (N = 3–13), has been investigated using a semiclassical non-adiabatic dynamics approach with inclusion of electronic quantum decoherence, and compared with experiment.
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Affiliation(s)
- Ivan Janeček
- Institute of Geonics of the AS CR, v.v.i
- and Institute of Clean Technologies for Mining and Utilization of Raw Materials for Energy Use
- 708 00 Ostrava
- Czech Republic
| | - Pavel Naar
- Department of Physics
- Faculty of Sciences
- University of Ostrava
- 701 03 Ostrava
- Czech Republic
| | - Martin Stachoň
- IT4Innovations National Supercomputing Center
- VSB – Technical University of Ostrava
- 708 33 Ostrava
- Czech Republic
| | | | - René Kalus
- IT4Innovations National Supercomputing Center and Department of Applied Mathematics
- VŠB – Technical University of Ostrava
- 708 33 Ostrava
- Czech Republic
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15
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Gao W, Chen Y, Jiang Q. Discriminating between Metallic and Semiconducting Single-Walled Carbon Nanotubes Using Physisorbed Adsorbates: Role of Wavelike Charge-Density Fluctuations. PHYSICAL REVIEW LETTERS 2016; 117:246101. [PMID: 28009180 DOI: 10.1103/physrevlett.117.246101] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Indexed: 06/06/2023]
Abstract
Discriminating between metallic (M) and semiconducting (S) single-walled carbon nanotubes (SWNTs) remains a fundamental challenge in the field of nanotechnology. We address this issue by studying the adsorption of the isotropic atoms Xe, Kr, and a highly anisotropic molecule n heptane on M- and S-SWNTs with density functional theory that includes many-body dispersion forces. We find that the distinct polarizabilities of M- and S-SWNTs exhibit significantly different physisorption properties, which are also strongly controlled by the SWNT's diameter, adsorption site, adsorbate coverage, and the adsorbate's anisotropy. These findings stem from the wavelike nature of charge-density fluctuations in SWNTs. Particularly, these results allow us to rationalize the unusual sqrt[3]×sqrt[3]R30^{0} phase of Kr atoms on small gap M-SWNTs and the double desorption peak temperatures of n heptane on M-SWNTs in experiments, and also propose the n heptane as an effective sensor for experimentally discriminating M- and S-SWNTs.
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Affiliation(s)
- Wang Gao
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, Department of Materials Science and Engineering, Jilin University, Changchun 130022, China
| | - Yun Chen
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, Department of Materials Science and Engineering, Jilin University, Changchun 130022, China
| | - Qing Jiang
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, Department of Materials Science and Engineering, Jilin University, Changchun 130022, China
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16
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Chrysos M, Rachet F. Heavy rare-gas atomic pairs and the "double penalty" issue: Isotropic Raman lineshapes by Kr2, Xe2, and KrXe at room temperature. J Chem Phys 2016; 143:174301. [PMID: 26547164 DOI: 10.1063/1.4934784] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report absolutely calibrated isotropic Raman lineshapes for Kr2 and Xe2 and for KrXe at 294.5 K and compare them to quantum-mechanically generated lineshapes by using state-of-the-art second-order Møller-Plesset and DFT/B3LYP data sets for the induced mean dipole polarizability ᾱ. A very good agreement between the numerical and the experimental data was observed but the large uncertainty margins and the short Raman frequency interval probed in our experiment prevented us from rating on a more refined scale the performance of the tested ᾱ models. These drawbacks are inherent in isotropic Raman spectrum measurements and amplified for dissimilar pairs because, for such systems and spectra, the unreliable operation of subtracting optical signals of comparable magnitude occurs twice per Raman frequency shift value, thus penalizing twice the quality of the measured data. In light of our findings and of previously reported evidence about related electric properties in Kr2 and Xe2 and in KrXe, we are left with no doubt as to the consistency of the induced-polarizability and interatomic-potential data used for these three systems at the reported level of accuracy.
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Affiliation(s)
- M Chrysos
- LUNAM Université, Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH-Anjou, 2 Bd Lavoisier, 49045 Angers, France
| | - F Rachet
- LUNAM Université, Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH-Anjou, 2 Bd Lavoisier, 49045 Angers, France
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17
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Jäger B, Hellmann R, Bich E, Vogel E. State-of-the-art ab initio potential energy curve for the krypton atom pair and thermophysical properties of dilute krypton gas. J Chem Phys 2016; 144:114304. [DOI: 10.1063/1.4943959] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Benjamin Jäger
- Institut für Chemie, Universität Rostock, D-18059 Rostock, Germany
| | - Robert Hellmann
- Institut für Chemie, Universität Rostock, D-18059 Rostock, Germany
| | - Eckard Bich
- Institut für Chemie, Universität Rostock, D-18059 Rostock, Germany
| | - Eckhard Vogel
- Institut für Chemie, Universität Rostock, D-18059 Rostock, Germany
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18
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Waldrop JM, Song B, Patkowski K, Wang X. Accurate ab initio potential for the krypton dimer and transport properties of the low-density krypton gas. J Chem Phys 2015; 142:204307. [DOI: 10.1063/1.4921623] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Jonathan M. Waldrop
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, USA
| | - Bo Song
- Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
| | - Konrad Patkowski
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, USA
| | - Xiaopo Wang
- Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
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19
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Shirkov L, Makarewicz J. Does DFT-SAPT method provide spectroscopic accuracy? J Chem Phys 2015; 142:064102. [DOI: 10.1063/1.4907204] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Niimi K, Nakayama A, Ono Y, Taketsugu T. Vibrational Shifts of HXeCl in Matrix Environments. J Phys Chem A 2014; 118:380-7. [DOI: 10.1021/jp411298p] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Keisuke Niimi
- Graduate
School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0810, Japan
| | - Akira Nakayama
- Catalysis
Research Center, Hokkaido University, Sapporo 001-0021, Japan
| | - Yuriko Ono
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Tetsuya Taketsugu
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
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Janeček I, Janča T, Naar P, Kalus R, Gadea FX. Multiscale approach combining nonadiabatic dynamics with long-time radiative and non-radiative decay: Dissociative ionization of heavy rare-gas tetramers revisited. J Chem Phys 2013; 138:044303. [DOI: 10.1063/1.4775804] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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22
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Kullie O, Saue T. Range-separated density functional theory: A 4-component relativistic study of the rare gas dimers He2, Ne2, Ar2, Kr2, Xe2, Rn2 and Uuo2. Chem Phys 2012. [DOI: 10.1016/j.chemphys.2011.06.024] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Islampour R, Gharibi M, Khavaninzadeh A. A comparative study of intermolecular potential energy functions proposed for the rare gas dimers. J STRUCT CHEM+ 2011. [DOI: 10.1134/s0022476611040044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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Bruch LW. Properties of a suggested commensurate monolayer solid of Kr/NaCl(001). J Phys Chem A 2011; 115:6882-7. [PMID: 21469671 DOI: 10.1021/jp111759p] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
It is shown that a commensurate square monolayer solid of Kr/NaCl(001) can be stabilized with a model incorporating a rather large energy corrugation amplitude. Then a square bilayer is formed under a compression and preempts the formation of an incommensurate triangular monolayer lattice. The lattice dynamics of the commensurate monolayer may be complex, because the modeling admits the possibility that it has a (2 × 2) unit cell with four Kr atoms.
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Affiliation(s)
- L W Bruch
- Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.
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25
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DHAM ASHOKK. Multi-property predictions from recent He-CO potential energy surfaces and related comments on the nature of heteronuclear-rare gas interactions. Mol Phys 2010. [DOI: 10.1080/00268979650026389] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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26
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Nguyen HV, Galli G. A first-principles study of weakly bound molecules using exact exchange and the random phase approximation. J Chem Phys 2010; 132:044109. [DOI: 10.1063/1.3299247] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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27
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Janeček I, Cintavá S, Hrivňák D, Kalus R, Fárník M, Gadea FX. Postionization fragmentation of rare-gas trimers revisited with new theoretical approaches. J Chem Phys 2009; 131:114306. [DOI: 10.1063/1.3224855] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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28
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Dixneuf S, Chrysos M, Rachet F. Anisotropic collision-induced Raman scattering by the Kr:Xe gas mixture. J Chem Phys 2009; 131:074304. [DOI: 10.1063/1.3200929] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Dham AK, McCourt FRW, Meath WJ. An exchange-Coulomb model potential energy surface for the Ne-CO interaction. I. Calculation of Ne-CO van der Waals spectra. J Chem Phys 2009; 130:244310. [PMID: 19566156 DOI: 10.1063/1.3157169] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Exchange-Coulomb model potential energy surfaces have been developed for the Ne-CO interaction. The initial model is a three-dimensional potential energy surface based upon computed Heitler-London interaction energies and literature results for the long-range induction and dispersion energies, all as functions of interspecies distance, the orientation of CO relative to the interspecies axis, and the bond length of the CO molecule. Both a rigid-rotor model potential energy surface, obtained by setting the CO bond length equal to its experimental spectroscopic equilibrium value, and a vibrationally averaged model potential energy surface, obtained by averaging the stretching dependence over the ground vibrational motion of the CO molecule, have been constructed from the full data set. Adjustable parameters in each model potential energy surface have been determined through fitting a selected subset of pure rotational transition frequencies calculated for the (20)Ne-(12)C(12)O isotopolog to precisely known experimental values. Both potential energy surfaces provide calculated results for a wide range of available experimental microwave, millimeter-wave, and midinfrared Ne-CO transition frequencies that are generally far superior to those obtained using the best current literature potential energy surfaces. The vibrationally averaged CO ground state potential energy surface, employed together with a potential energy surface obtained from it by replacing the ground vibrational state average of the CO stretching dependence of the potential energy surface by an average over the first excited CO vibrational state, has been found to be particularly useful for computing and/or interpreting mid-IR transition frequencies in the Ne-CO dimer.
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Affiliation(s)
- Ashok K Dham
- Department of Physics, Punjabi University, Patiala 147002, India
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Tkatchenko A, DiStasio RA, Head-Gordon M, Scheffler M. Dispersion-corrected Mo̸ller–Plesset second-order perturbation theory. J Chem Phys 2009; 131:094106. [DOI: 10.1063/1.3213194] [Citation(s) in RCA: 182] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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32
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Amat MA, Arienti M, Fonoberov VA, Kevrekidis IG, Maroudas D. Coarse molecular-dynamics analysis of an order-to-disorder transformation of a krypton monolayer on graphite. J Chem Phys 2008; 129:184106. [DOI: 10.1063/1.3006427] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Murdachaew G, de Gironcoli S, Scoles G. Toward an Accurate and Efficient Theory of Physisorption. I. Development of an Augmented Density-Functional Theory Model. J Phys Chem A 2008; 112:9993-1005. [DOI: 10.1021/jp800974k] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Garold Murdachaew
- SISSA-ISAS: International School for Advanced Studies, Via Beirut 2-4, I-34014 Trieste, Italy
| | | | - Giacinto Scoles
- SISSA-ISAS, CNR-INFM DEMOCRITOS, and Department of Chemistry, Princeton University, Princeton, New Jersey 08544
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Pirani F, Brizi S, Roncaratti LF, Casavecchia P, Cappelletti D, Vecchiocattivi F. Beyond the Lennard-Jones model: a simple and accurate potential function probed by high resolution scattering data useful for molecular dynamics simulations. Phys Chem Chem Phys 2008; 10:5489-503. [PMID: 18956082 DOI: 10.1039/b808524b] [Citation(s) in RCA: 187] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Scattering data, measured for rare gas-rare gas systems under high angular and energy resolution conditions, have been used to probe the reliability of a recently proposed interaction potential function, which involves only one additional parameter with respect to the venerable Lennard-Jones (LJ) model and is hence called Improved Lennard-Jones (ILJ). The ILJ potential eliminates most of the inadequacies at short- and long-range of the LJ model. Further reliability tests have been performed by comparing calculated vibrational spacings with experimental values and calculated interaction energies at short-range with those obtained from the inversion of gaseous transport properties. The analysis, extended also to systems involving ions, suggests that the ILJ potential model can be used to estimate the behavior of unknown systems and can help to assess the different role of the leading interaction components. Moreover, due to its simple formulation, the physically reliable ILJ model appears to be particularly useful for molecular dynamics simulations of both neutral and ionic systems.
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Affiliation(s)
- Fernando Pirani
- Dipartimento di Chimica, Università di Perugia, 06123, Perugia, Italy.
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Gerber IC, Angyán JG. London dispersion forces by range-separated hybrid density functional with second order perturbational corrections: The case of rare gas complexes. J Chem Phys 2007; 126:044103. [PMID: 17286458 DOI: 10.1063/1.2431644] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
A satisfactory account of the van der Waals (vdW) (London dispersion) forces is, in general not possible by the Kohn-Sham method using standard local, semilocal generalized gradient approximation (GGA), or meta-GGA density functionals. The recently proposed range-separated hybrid (RSH) approach, supplemented by second order perturbational corrections (MP2) to include long-range dynamic correlation effects, offers a physically consistent, seamless description of dispersion forces. It is based on a rigorous generalization of the Kohn-Sham method, where long-range exchange and correlation effects are treated by wave function methods, while short-range electron exchange and correlation are handled by local or semilocal functionals. The method is tested on a series of rare gas dimers in comparison with standard wave function theory and density functional theory approaches. In contrast to the most successful exchange correlation functionals, which describe at best the vdW minimum, the RSH+MP2 approach is valid also in the asymptotic region and the potential curve displays the correct 1/R(6) behavior at large internuclear separations. In contrast to usual MP2 calculations, the basis set superposition error is considerably reduced, making RSH+MP2 an ideal tool for exploring the potential energy surface of weakly bound molecular complexes.
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Affiliation(s)
- I C Gerber
- Laboratoire de Cristallographie et de Modélisation des Matériaux Minéraux et Biologiques, UMR 7036, CNRS, Nancy Université, B.P. 239, F-54506 Vandoeuvre-lès-Nancy, France
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Janecek I, Hrivnák D, Kalus R, Gadéa FX. Theoretical modeling of postionization fragmentation of rare-gas trimer cations. J Chem Phys 2006; 125:104315. [PMID: 16999534 DOI: 10.1063/1.2337632] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The dynamics of ionic rare-gas trimers (Ar(3) (+), Kr(3) (+), and Xe(3) (+)) produced by a sudden ionization of neutral precursors is investigated theoretically with a hybrid classical-quantum method for solving the equations of motion governed by a Hamiltonian obtained from a previously tested diatomics-in-molecules model. Initial conditions are selected with Monte Carlo sampling. Two possibilities for generating the initial electronic state are considered: diabatic (local) and adiabatic (delocalized). The dynamics generally leads to fragmentation, producing either monomer ions or dimer ions in a relatively short time; however, a large number of long-lived metastable trimer ions are also seen in some cases. We have analyzed the dynamics with respect to the fraction of monomer ions produced, the distribution of the kinetic energy of the products, and the distribution of fragmentation times of the trimers. Initial diabatic ionization is associated with much faster fragmentation than adiabatic ionization. Spin-orbit coupling plays an important role in the fragmentation dynamics.
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Affiliation(s)
- Ivan Janecek
- Department of Physics, University of Ostrava, 30. dubna 22, 701 03 Ostrava, Czech Republic.
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Podeszwa R, Szalewicz K. Accurate interaction energies for argon, krypton, and benzene dimers from perturbation theory based on the Kohn–Sham model. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2005.07.029] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Bruch LW, Hansen FY. Excitation of the shear horizontal mode in a monolayer by inelastic helium atom scattering. J Chem Phys 2005; 122:114714. [PMID: 15836250 DOI: 10.1063/1.1869416] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Inelastic scattering of a low-energy atomic helium beam (HAS) by a physisorbed monolayer is treated in the one-phonon approximation using a time-dependent wave packet formulation. The calculations show that modes with shear horizontal polarization can be excited near high symmetry azimuths of the monolayer, in agreement with recent experiments. The parameters of the calculations are chosen to match the conditions of HAS experiments for triangular incommensurate monolayer solids of xenon, krypton, and argon adsorbed on the (111) face of platinum, and the results show many of the systematic experimental trends for relative excitation probability of the shear horizontal and longitudinal acoustic phonon branches. The inelastic scattering at beam energies near 8 meV is exceedingly sensitive to small misalignment between the scattering plane and the high symmetry directions of the monolayer solid. The diffraction and inelastic processes arise from a strong coupling of the incident atom to the target and the calculated results show large departures from expectations based on analogies to inelastic thermal neutron scattering.
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Affiliation(s)
- L W Bruch
- Department of Physics, University of Wisconsin-Madison, 53706, USA
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Bamdad M, Alavi S, Najafi B, Keshavarzi E. Investigation of the density dependence of the shear relaxation time of dense fluids. CAN J CHEM 2005. [DOI: 10.1139/v05-047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The shear relaxation time, a key quantity in the theory of viscosity, is calculated for the LennardJones fluid and fluid krypton. The shear relaxation time is initially calculated by the ZwanzigMountain method, which defines this quantity as the ratio of the shear viscosity coefficient to the infinite shear modulus. The shear modulus is calculated from highly accurate radial distribution functions obtained from molecular dynamics simulations of the LennardJones potential and a realistic potential for krypton. This calculation shows that the density dependence of the shear relaxation time isotherms of the LennardJones fluid and Kr pass through a minimum. The minimum in the shear relaxation times is also obtained from calculations using the different approach originally proposed by van der Gulik. In this approach, the relaxation time is determined as the ratio of shear viscosity coefficient to the thermal pressure. The density of the minimum of the shear relaxation time is about twice the critical density and is equal to the common density, which was previously reported for supercritical gases where the viscosity of the gas becomes independent of temperature. It is shown that this common point occurs in both gas and liquid phases. At densities lower than this common density, even in the liquid state, the viscosity increases with increasing temperature.Key words: dense fluids, radial distribution function, shear modulus, shear relaxation time, shear viscosity.
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Wei H, Le Roy RJ, Wheatley R, Meath WJ. A reliable new three-dimensional potential energy surface for H2–Kr. J Chem Phys 2005; 122:84321. [PMID: 15836053 DOI: 10.1063/1.1850462] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
An improved three-dimensional potential energy surface for the H(2)-Kr system is determined from a direct fit of new infrared spectroscopic data for H(2)-Kr and D(2)-Kr to a potential energy function form based on the exchange-Coulomb model for the intermolecular interaction energy. These fits require repetitive, highly accurate simulations of the observed spectra, and both the strength of the potential energy anisotropy and the accuracy of the new data make the "secular equation perturbation theory" method used in previous analyses of H(2)-(rare gas) spectra inadequate for the present work. To address this problem, an extended version of the "iterative secular equation" method was developed which implements direct Hellmann-Feynman theorem calculation of the partial derivatives of eigenvalues with respect to parameters of the Hamiltonian which are required for the fits.
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Affiliation(s)
- Hua Wei
- Guelph-Waterloo Center for Graduate Work in Chemistry and Biochemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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Apfelbaum EM, Vorob'ev VS, Martynov GA. Virial Expansion Providing of the Linearity for a Unit Compressibility Factor. J Phys Chem A 2004. [DOI: 10.1021/jp046417z] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- E. M. Apfelbaum
- Institute for High Energy Densities of RAS, Izhorskay 13/19, 125412, Moscow, Russia, and Institute of Physical Chemistry of RAS, Leninskii pr. 31,117915, Moscow, Russia
| | - V. S. Vorob'ev
- Institute for High Energy Densities of RAS, Izhorskay 13/19, 125412, Moscow, Russia, and Institute of Physical Chemistry of RAS, Leninskii pr. 31,117915, Moscow, Russia
| | - G. A. Martynov
- Institute for High Energy Densities of RAS, Izhorskay 13/19, 125412, Moscow, Russia, and Institute of Physical Chemistry of RAS, Leninskii pr. 31,117915, Moscow, Russia
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Wüest A, Hollenstein U, de Bruin KG, Merkt F. High-resolution vacuum ultraviolet laser spectroscopy of the C 0+u ← X 0+g transition of Xe2. CAN J CHEM 2004. [DOI: 10.1139/v04-073] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Rotationally resolved (1 + 1′), resonance-enhanced, two-photon ionization spectra of the C 0+u ← X 0+g transition of several isotopomers of Xe2 have been recorded. Rotational constants have been determined for the v′ = 1426 levels of the C 0+u Rydberg state and the v′′ = 0 and 1 levels of the X 0+g ground state, and band origins have been determined with an absolute accuracy of 0.015 cm1 for the transitions to the v′ = 1426 levels of the C 0+u state of the 129Xe2, 129Xe132Xe, and 131Xe136Xe isotopomers. The equilibrium internuclear separation of the X 0+g ground state (Re = 4.3773(49) Å) was determined from the rotational constants of the v′′ = 0 and 1 levels. The analysis of the isotopic shifts of the band origins enabled the confirmation of the absolute numbering of the vibrational levels of the C 0+u state determined by Lipson et al. (R.H. Lipson, P.E. Larocque, and B.P. Stoicheff. J. Chem. Phys. 82, 4470 (1985)). A semiempirical interaction potential for the X 0+g ground state was derived in a nonlinear fitting procedure using the present spectroscopic results, the positions of the v′′ = 29 levels determined by Freeman et al. (D.E. Freeman, K. Yoshino, and Y. Tanaka. J. Chem. Phys. 61, 4880 (1974)) and experimental values for the second virial coefficient. The interaction potential is similar to previous semiempirical potentials but the dissociation energy (De = (196.1 ± 1.1) cm1) differs from the value of 183.1 cm1 determined in the latest ab initio calculation (P. Slavíček, R. Kalus, P. Paka, I. Odvárková, P. Hobza, and A. Malijevský. J. Chem. Phys. 119, 2102 (2003)). Key words: high-resolution vacuum ultraviolet laser spectroscopy, rare gas dimers and their cations, photoionisation, Xe2, rotationally resolved electronic spectrum.
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Kalus R, Paidarová I, Hrivňák D, Xavier Gadéa F. Modelling of Krn+ clusters. II. Photoabsorption spectra of small clusters (n=2–5). Chem Phys 2004. [DOI: 10.1016/j.chemphys.2003.11.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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MALIJEVSKÝ ALEXANDR, MALIJEVSKÝ ANATOL. Monte Carlo simulations of thermodynamic properties of argon, krypton and xenon in liquid and gas state using newab initiopair potentials. Mol Phys 2003. [DOI: 10.1080/00268970310001638808] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Haley TP, Cybulski SM. Ground state potential energy curves for He–Kr, Ne–Kr, Ar–Kr, and Kr2: Coupled-cluster calculations and comparison with experiment. J Chem Phys 2003. [DOI: 10.1063/1.1600434] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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