1
|
Song L, Groenenboom GC, van der Avoird A, Bishwakarma CK, Sarma G, Parker DH, Suits AG. Inelastic Scattering of CO with He: Polarization Dependent Differential State-to-State Cross Sections. J Phys Chem A 2015; 119:12526-37. [PMID: 26473516 DOI: 10.1021/acs.jpca.5b08472] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A joint theoretical and experimental study of state-to-state rotationally inelastic polarization dependent differential cross sections (PDDCSs) for CO (v = 0, j = 0, 1, 2) molecules colliding with helium is reported for collision energies of 513 and 840 cm(-1). In a crossed molecular beam experiment, velocity map imaging (VMI) with state-selective detection by (2 + 1) and (1 + 1') resonance enhanced multiphoton ionization (REMPI) is used to probe rotational excitation of CO due to scattering. By taking account of the known fractions of the j = 0, 1, and 2 states of CO in the rotationally cold molecular beam (Trot ≈ 3 K), close-coupling theory based on high-quality ab initio potential energy surfaces for the CO-He interaction is used to simulate the differential cross sections for the mixed initial states. With polarization-sensitive 1 + 1' REMPI detection and a direct analysis procedure described by Suits et al. ( J. Phys, Chem. A 2015 , 119 , 5925 ), alignment moments are extracted from the images and the latter are compared with images simulated by theory using the calculated DCS and alignment moments. In general, good agreement of theory with the experimental results is found, indicating the reliability of the experiment in reproducing state-to-state differential and polarization-dependent differential cross sections.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Arthur G Suits
- Department of Chemistry, Wayne State University , Detroit, Michigan 48202, United States
| |
Collapse
|
2
|
BUNDGEN BPETER, THAKKAR AJITJ. Reliable anisotropic dipole properties and dispersion energy coefficients for NO, evaluated using constrained dipole oscillator strength techniques. Mol Phys 2010. [DOI: 10.1080/002689797172084] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
3
|
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: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|
4
|
Dham AK, McBane GC, McCourt FRW, Meath WJ. An exchange-Coulomb model potential energy surface for the Ne-CO interaction. II. Molecular beam scattering and bulk gas phenomena in Ne-CO mixtures. J Chem Phys 2010; 132:024308. [PMID: 20095675 DOI: 10.1063/1.3285721] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Four potential energy surfaces are of current interest for the Ne-CO interaction. Two are high-level fully ab initio surfaces obtained a decade ago using symmetry-adapted perturbation theory and supermolecule coupled-cluster methods. The other two are very recent exchange-Coulomb (XC) model potential energy surfaces constructed by using ab initio Heitler-London interaction energies and literature long range dispersion and induction energies, followed by the determination of a small number of adjustable parameters to reproduce a selected subset of pure rotational transition frequencies for the (20)Ne-(12)C(16)O van der Waals cluster. Testing of the four potential energy surfaces against a wide range of available experimental microwave, millimeter-wave, and mid-infrared Ne-CO transition frequencies indicated that the XC potential energy surfaces gave results that were generally far superior to the earlier fully ab initio surfaces. In this paper, two XC model surfaces and the two fully ab initio surfaces are tested for their abilities to reproduce experiment for a wide range of nonspectroscopic Ne-CO gas mixture properties. The properties considered here are relative integral cross sections and the angle dependence of rotational state-to-state differential cross sections, rotational relaxation rate constants for CO(v=2) in Ne-CO mixtures at T=296 K, pressure broadening of two pure rotational lines and of the rovibrational lines in the CO fundamental and first overtone transitions at 300 K, and the temperature and, where appropriate, mole fraction dependencies of the interaction second virial coefficient, the binary diffusion coefficient, the interaction viscosity, the mixture shear viscosity and thermal conductivity coefficients, and the thermal diffusion factor. The XC model potential energy surfaces give results that lie within or very nearly within the experimental uncertainties for all properties considered, while the coupled-cluster ab initio surface gives results that agree similarly well for all but one of the properties considered. When the present comparisons are combined with the ability to give accurate spectroscopic transition frequencies for the Ne-CO van der Waals complex, only the XC potential energy surfaces give results that agree well with all extant experimental data for the Ne-CO interaction.
Collapse
Affiliation(s)
- Ashok K Dham
- Department of Physics, Punjabi University, Patiala 147002, India
| | | | | | | |
Collapse
|
5
|
Li H, Le Roy RJ, McCourt FRW. Predicted bound states and microwave spectrum of N2-He van der Waals complexes. J Chem Phys 2009; 130:244503. [PMID: 19566162 DOI: 10.1063/1.3157776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Numerical calculations show that four modern potential energy surfaces for N(2)-He all support 18 bound intermolecular states for the homonuclear isotopologues (14,14)N(2)-(4)He and (15,15)N(2)-(4)He, and 12 (or 13, for one surface) truly bound states for (14,15)N(2)-He. This contradicts a recent statement [Patel et al., J. Chem. Phys. 119, 909 (2003)] that one of these surfaces supports no bound states, and it yields predictions for 27 allowed pure rotational transitions among the truly bound states of the homonuclear isotopologues of this complex.
Collapse
Affiliation(s)
- Hui Li
- Department of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
| | | | | |
Collapse
|
6
|
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.
Collapse
Affiliation(s)
- Ashok K Dham
- Department of Physics, Punjabi University, Patiala 147002, India
| | | | | |
Collapse
|
7
|
Dham AK, McCourt FRW, Dickinson AS. Accuracy of recent potential energy surfaces for the He–N2 interaction. I. Virial and bulk transport coefficients. J Chem Phys 2007; 127:054302. [PMID: 17688335 DOI: 10.1063/1.2753483] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
A new exchange-Coulomb semiempirical model potential energy surface for the He-N2 interaction has been developed. Together with two recent high-level ab initio potential energy surfaces, it has been tested for the reliability of its predictions of second-virial coefficients and bulk transport phenomena in binary mixtures of He and N2. The agreement with the relevant available measurements is generally within experimental uncertainty for the exchange-Coulomb surface and the ab initio surface of Patel et al. [J. Chem. Phys. 119, 909 (2003)], but with slightly poorer agreement for the earlier ab initio surface of Hu and Thakkar [J. Chem. Phys. 104, 2541 (1996)].
Collapse
Affiliation(s)
- Ashok K Dham
- Department of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | | | | |
Collapse
|
8
|
Dham AK, Meath WJ, Jechow JW, McCourt FRW. New exchange-Coulomb N2-Ar potential-energy surface and its comparison with other recent N2-Ar potential-energy surfaces. J Chem Phys 2007; 124:034308. [PMID: 16438584 DOI: 10.1063/1.2159001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The reliability of five N2-Ar potential-energy surfaces in representing the N2-Ar interaction has been investigated by comparing their abilities to reproduce a variety of experimental results, including interaction second viral coefficients, bulk transport properties, relaxation phenomena, differential scattering cross sections, and the microwave and infrared spectra of the van der Waals complexes. Four of the surfaces are the result of high-level ab initio quantal calculations; one of them utilized fine tuning by fitting to microwave data. To date, these four potential-energy surfaces have only been tested against experimental microwave data. The fifth potential-energy surface, based upon the exchange-Coulomb potential-energy model for the interaction of closed-shell species, is developed herein: it is a combination of a damped dispersion energy series and ab initio calculations of the Heitler-London interaction energy, and has adjustable parameters determined by requiring essentially simultaneous agreement with selected quality interaction second viral coefficient and microwave data. Comparisons are also made with the predictions of three other very good literature potential-energy surfaces, including the precursor of the new exchange-Coulomb potential-energy surface developed here. Based upon an analysis of a large body of information, the new exchange-Coulomb and microwave-tuned ab initio potential-energy surfaces provide the best representations of the N2-Ar interaction; nevertheless, the other potential-energy surfaces examined still have considerable merit with respect to the prediction of specific properties of the N2-Ar van der Waals complex. Of the two recommended surfaces, the new exchange-Coulomb surface is preferred on balance due to its superior predictions of the effective cross sections related to various relaxation phenomena, and to its reliable, and relatively simple, representation of the long-range part of the potential-energy surface. Moreover, the flexibility still inherent in the exchange-Coulomb potential form can be further exploited, if required, in future studies of the N2-Ar interaction.
Collapse
Affiliation(s)
- Ashok K Dham
- Department of Physics, Punjabi University, Patiala 147002, India
| | | | | | | |
Collapse
|
9
|
Peterson KA, McBane GC. A hierarchical family of three-dimensional potential energy surfaces for He-CO. J Chem Phys 2007; 123:084314. [PMID: 16164298 DOI: 10.1063/1.1947194] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A hierarchical family of five three-dimensional potential energy surfaces has been developed for the benchmark He-CO system. Four surfaces were obtained at the coupled cluster singles and doubles level of theory with a perturbational estimate of triple excitations, CCSD(T), and range in quality from the doubly augmented double-zeta basis set to the complete basis set (CBS) limit. The fifth corresponds to an approximate CCSDT/CBS surface (CCSD with iterative triples/CBS, denoted CBS+corr). The CBS limit results were obtained by pointwise basis set extrapolations of the individual counterpoise-corrected interaction energies. For each surface, over 1000 interaction energies were accurately interpolated using a reproducing kernel Hilbert space approach with an R-6+R-7 asymptotic form. In each case, both three-dimensional and effective two-dimensional surfaces were developed. In standard Jacobi coordinates, the final CBS+corr surface has a global minimum at rCO=2.1322a0,R=6.418a0, and gamma=70.84 degrees with a well depth of -22.34 cm-1. The other four surfaces have well depths ranging from -14.83 cm-1 [CCSD(T)/d-aug-cc-pVDZ] to -22.02 cm-1 [CCSD(T)/CBS]. For each of these surfaces the infrared spectrum has been accurately calculated and compared to experiment, as well as to previous theoretical and empirical surfaces. The final CBS+corr surface exhibits root-mean-square and maximum errors compared to experiment (4He) of just 0.03 and 0.04 cm-1, respectively, for all 42 transitions and is the most accurate ab initio surface to date for this system. Other quantities investigated include the interaction second virial coefficient, the integral cross sections, and thermal rate coefficients for rotational relaxation of CO by He, and rate coefficients for CO vibrational relaxation by He. All the observable quantities showed a smooth convergence with respect to the quality of the underlying interaction surface.
Collapse
Affiliation(s)
- Kirk A Peterson
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, USA.
| | | |
Collapse
|
10
|
|
11
|
McKellar ARW. Helium clusters seeded with CO molecules: New results for HeN–C1813O and the approach to the nanodroplet limit. J Chem Phys 2006; 125:164328. [PMID: 17092094 DOI: 10.1063/1.2363196] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Infrared spectra of helium clusters seeded with doubly substituted carbon monoxide molecules, 13C18O, have been studied in order to complement recent helium nanocluster results and to determine whether additional isotopic data would help to separate vibrational and rotational contributions to the observed transitions. The experiments were made by direct infrared absorption in pulsed supersonic jet expansions using a tunable diode laser probe in the region of the fundamental band (approximately 2045 cm-1 for 13C18O). Even with data on the R0 transitions from four CO isotopomers, it was found that a clear and consistent separation of vibration and rotation could not be achieved for HeN-CO clusters in the size range N approximately 10-20. Isotope shifts observed for clusters with 13C18O (relative to 12C16O) were found to be close to the sums of the shifts previously determined for 13C16O and 12C18O. The new measurements generally supported previous assignments of cluster size, but some modifications for the range N=14-16 are suggested here. New measurements for HeN-12C16O under conditions favoring larger clusters (high backing pressure and low jet temperature) showed that individual transitions could be resolved even at N approximately 50. For larger clusters, a partly resolved "lump" of transitions was observed to approach the nanodroplet limit.
Collapse
Affiliation(s)
- A R W McKellar
- Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, Ontario K1A 0R6, Canada.
| |
Collapse
|
12
|
Peterson KA, McBane GC. Erratum: “A hierarchical family of three dimensional potential energy surfaces for He-CO” [J. Chem. Phys. 123, 084314 (2005)]. J Chem Phys 2006. [DOI: 10.1063/1.2203608] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
13
|
Yang B, Stancil PC, Balakrishnan N, Forrey RC. Close-coupling study of rotational energy transfer of CO (υ=2) by collisions with He atoms. J Chem Phys 2005; 123:134326. [PMID: 16223307 DOI: 10.1063/1.2055267] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Quantum close-coupling scattering calculations of rotational energy transfer in the vibrationally excited CO due to collisions with He atom are presented for collision energies between 10(-5) and approximately 1000 cm-1 with CO being initially in the vibrational level upsilon=2 and rotational levels j=0,1,4, and 6. The He-CO interaction potential of Heijmen et al. [J. Chem. Phys. 107, 9921 (1997)] was adopted for the calculations. Cross sections for rovibrational transitions and state-to-state rotational energy transfer from selected initial rotational levels were computed and compared with recent measurements of Carty et al. [J. Chem. Phys. 121, 4671 (2004)] and available theoretical results. Comparison in all cases is found to be excellent, providing a stringent test for the scattering calculations as well as the reliability of the He-CO interaction potential by Heijmen et al.
Collapse
Affiliation(s)
- Benhui Yang
- Department of Physics and Astronomy and the Center for Simulational Physics, The University of Georgia, Athens, Georgia 30602-2451, USA.
| | | | | | | |
Collapse
|
14
|
Amaral GA, Aoiz FJ, Bañares L, Barr J, Herrero VJ, Martínez-Haya B, Menéndez M, Pino GA, Tanarro I, Torres I, Verdasco JE. Low-Temperature Rotational Relaxation of CO in Self-Collisions and in Collisions with Ne and He. J Phys Chem A 2005; 109:9402-13. [PMID: 16866388 DOI: 10.1021/jp051766u] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The low-temperature rotational relaxation of CO in self-collisions and in collisions with the rare-gas atoms Ne and He has been investigated in supersonic expansions with a combination of resonance-enhanced multiphoton ionization (REMPI) spectroscopy and time-of-flight techniques. For the REMPI detection of CO, a novel 2 + 1' scheme has been employed through the A(1)Pi state of CO. From the measured data, average cross sections for rotational relaxation have been derived as a function of temperature in the range 5-100 K. For CO-Ne and CO-He, the relaxation cross sections grow, respectively, from values of approximately 20 and 7 A(2) at 100 K to values of approximately 65-70 and approximately 20 A(2) in the 5-20 K temperature range. The cross section for the relaxation of CO-CO grows from a value close to 40 A(2) at 100 K to a maximum of 60 A(2) at 20 K and then decreases again to 40 A(2) at 5 K. These results are qualitatively similar to those obtained previously with the same technique for N(2)-N(2), N(2)-Ne, and N(2)-He collisions, although in the low-temperature range (T < 20 K) the CO relaxation cross sections are significantly larger than those for N(2). Some discrepancies have been found between the present relaxation cross sections for CO-CO and CO-He and the values derived from electron-induced fluorescence experiments.
Collapse
Affiliation(s)
- G A Amaral
- Departamento de Química Física, Facultad de Química, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
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: 2.0] [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.
Collapse
Affiliation(s)
- Hua Wei
- Guelph-Waterloo Center for Graduate Work in Chemistry and Biochemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | | | | | | |
Collapse
|
16
|
McKellar ARW. High resolution infrared spectra of helium clusters seeded with isotopic carbon monoxide, HeN-13C 16O and HeN-12C 18O. J Chem Phys 2004; 121:6868-73. [PMID: 15473745 DOI: 10.1063/1.1791636] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Infrared spectra of isotopically substituted HeN-CO clusters (1 < N < 19) have been studied in order to extend the original results on the normal isotope. The same two series of R(0) transitions were observed, correlating with the a- and b-type transitions of He1-CO, with only small shifts in relative position. The previously obscured a-type line for He6-CO was detected. Examination of the small shifts among isotopomers showed remarkably smooth behavior, except in the "unstable" regions around N=7 (b-type series) and 15 (a-type series). The overall results firmly support the assignments and analysis given for the normal isotope.
Collapse
Affiliation(s)
- A R W McKellar
- Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, Ontario K1A0R6, Canada
| |
Collapse
|
17
|
Smith TC, Hostutler DA, Hager GD, Heaven MC, McBane GC. State-to-state rotational rate constants for CO+He: Infrared double resonance measurements and simulation of the data using the SAPT theoretical potential energy surface. J Chem Phys 2004; 120:2285-95. [PMID: 15268367 DOI: 10.1063/1.1637341] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
An extensive data set of 54 time-resolved pump-probe measurements was used to examine CO + He rotational energy transfer within the CO v = 2 rotational manifold. Rotational levels in the range Ji = 2-9 were excited and collisional energy transfer of population to the levels Jf = 1-10 was monitored. The resulting data set was analyzed by fitting to numerical solutions of the master equation. State-to-state rate constant matrices were generated using fitting law functions and ab initio theoretical calculations that employed the SAPT potential energy surface of Heijmen et al. [J. Chem. Phys. 107, 9921 (1997)]. Fitting laws based on the modified exponential gap (MEG), statistical power exponential gap (SPEG), and energy corrected sudden with exponential power (ECS-EP) models all yielded acceptable simulations of the kinetic data, as did the theoretical rate constants. However, the latter were unique in their ability to reproduce both our kinetic data and the pressure broadening coefficients for CO + He. These results provide an impressive demonstration of the quality of the symmetry adapted perturbation theory (SAPT) potential energy surface.
Collapse
Affiliation(s)
- Tony C Smith
- Air Force Research Laboratory/Directed Energy Directorate, Kirtland Air Force Base, New Mexico 87117-5776, USA
| | | | | | | | | |
Collapse
|
18
|
Tang J, McKellar ARW. Cluster dynamics in the range N=2–20: High resolution infrared spectra of HeN–CO. J Chem Phys 2003. [DOI: 10.1063/1.1578473] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
|
19
|
|
20
|
|
21
|
Krems RV. Vibrational relaxation of vibrationally and rotationally excited CO molecules by He atoms. J Chem Phys 2002. [DOI: 10.1063/1.1451061] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
22
|
Boissoles J, Thibault F, Domenech JL, Bermejo D, Boulet C, Hartmann JM. Temperature dependence of line mixing effects in the stimulated Raman Q-branch of CO in He: A further test of close coupling calculations. J Chem Phys 2001. [DOI: 10.1063/1.1394752] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
23
|
Tao FM. Bond functions, basis set superposition errors and other practical issues with ab initio calculations of intermolecular potentials. INT REV PHYS CHEM 2001. [DOI: 10.1080/01442350110071957] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
24
|
Shroll RM, Lohr LL, Barker JR. Empirical potentials for rovibrational energy transfer of hydrogen fluoride in collisions with argon. J Chem Phys 2001. [DOI: 10.1063/1.1388547] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
25
|
Castillo-Chará J, Lucchese RR, Bevan JW. Differentiation of the ground vibrational and global minimum structures in the Ar:HBr intermolecular complex. J Chem Phys 2001. [DOI: 10.1063/1.1379337] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
26
|
DHAM ASHOKK, MEATH WILLIAMJ. Exchange-Coulomb potential energy surfaces and related physical properties for Ne-N2. Mol Phys 2001. [DOI: 10.1080/00268970010034559] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
27
|
GIANTURCO FA, PAESANI F. The rovibrational structure of the He-CO complex from a model interaction potential. Mol Phys 2001. [DOI: 10.1080/00268970010028836] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|
28
|
BELIKOV ANDREYE, STOROZHEV ALEXEYV, STREKALOV MIKHAILL, SMITH MARKA. Rotational relaxation rates in CO-He mixtures. Mol Phys 2001. [DOI: 10.1080/00268970010017306] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|
29
|
KOBAYASHI RIKA, AMOS RD, REID JP, QUINEY HM, SIMPSON CJSM. Coupled clusterab initiopotential energy surfaces for CO… He and CO… H2. Mol Phys 2000. [DOI: 10.1080/00268970009483403] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
30
|
Balakrishnan N, Dalgarno A, Forrey RC. Vibrational relaxation of CO by collisions with 4He at ultracold temperatures. J Chem Phys 2000. [DOI: 10.1063/1.481838] [Citation(s) in RCA: 99] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
31
|
Surin LA, Roth DA, Pak I, Dumesh BS, Lewen F, Winnewisser G. Detection of the millimeter wave spectra of the weakly bound complexes 3He–CO and 4He–CO. J Chem Phys 2000. [DOI: 10.1063/1.480955] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
|
32
|
Gianturco FA, Lewerenz M, Paesani F, Toennies JP. A stochastic study of microsolvation. II. Structures of CO in small helium clusters. J Chem Phys 2000. [DOI: 10.1063/1.480789] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
|
33
|
Meuwly M, Hutson JM. Intermolecular potential energy surfaces and bound states in F–HF. J Chem Phys 2000. [DOI: 10.1063/1.480552] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
34
|
Salazar M, Paz J, Hernández A. Ab initio basis set study of the CO⋯He van der Waals interaction. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s0166-1280(99)00233-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
35
|
Ball CD, Mengel M, De Lucia FC, Woon DE. Quantum scattering calculations for H2S–He between 1–600 K in comparison with pressure broadening, shift, and time resolved double resonance experiments. J Chem Phys 1999. [DOI: 10.1063/1.480234] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
36
|
Antonova S, Lin A, Tsakotellis AP, McBane GC. State to state Ne–CO rotationally inelastic scattering. J Chem Phys 1999. [DOI: 10.1063/1.479119] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
37
|
McKellar ARW, Xu Y, Jäger W, Bissonnette C. Isotopic probing of very weak intermolecular forces: Microwave and infrared spectra of CO-He isotopomers. J Chem Phys 1999. [DOI: 10.1063/1.479020] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
38
|
Meuwly M, Hutson JM. Morphing ab initio potentials: A systematic study of Ne–HF. J Chem Phys 1999. [DOI: 10.1063/1.478744] [Citation(s) in RCA: 121] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
39
|
Antonova S, Lin A, Tsakotellis AP, McBane GC. State to state He–CO rotationally inelastic scattering. J Chem Phys 1999. [DOI: 10.1063/1.477943] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
40
|
Flatin DC, Goyette TM, Beaky MM, Ball CD, De Lucia FC. Rotational state dependence of collision induced line broadening and shift at low temperature. J Chem Phys 1999. [DOI: 10.1063/1.477818] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
41
|
GIANTURCO FA, PAESANI F, LARANJEIRA MF, VASSILENKO V, CUNHA MA, SHASHKOV AG, ZOLOTOUKHINA AF. Computed and measured transport coefficients for CO-He mixtures: testing a density functional approach. Mol Phys 1998. [DOI: 10.1080/002689798167773] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
42
|
Heijmen TGA, Moszynski R, Wormer PES, van der Avoird A. A new He–CO interaction energy surface with vibrational coordinate dependence. I. Ab initio potential and infrared spectrum. J Chem Phys 1997. [DOI: 10.1063/1.475290] [Citation(s) in RCA: 103] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
43
|
Reid JP, Simpson CJSM, Quiney HM. A new He–CO interaction energy surface with vibrational coordinate dependence. II. The vibrational deactivation of CO(v=1) by inelastic collisions with 3He and 4He. J Chem Phys 1997. [DOI: 10.1063/1.475295] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
44
|
|
45
|
Chan M, McKellar ARW. Observation of strong hidden lines in the infrared spectrum of the CO–He complex. J Chem Phys 1996. [DOI: 10.1063/1.472707] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
46
|
Kumar A, Meath WJ, Bündgen P, Thakkar AJ. Reliable anisotropic dipole properties, and dispersion energy coefficients, for O2evaluated using constrained dipole oscillator strength techniques. J Chem Phys 1996. [DOI: 10.1063/1.472344] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
47
|
Beaky MM, Goyette TM, De Lucia FC. Pressure broadening and line shift measurements of carbon monoxide in collision with helium from 1 to 600 K. J Chem Phys 1996. [DOI: 10.1063/1.472273] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
48
|
Thachuk M, Chuaqui CE, Le Roy RJ. Linewidths and shifts of very low temperature CO in He: A challenge for theory or experiment? J Chem Phys 1996. [DOI: 10.1063/1.472274] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
49
|
Bissonnette C, Chuaqui CE, Crowell KG, Le Roy RJ, Wheatley RJ, Meath WJ. A reliable new potential energy surface for H2–Ar. J Chem Phys 1996. [DOI: 10.1063/1.472127] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
50
|
Atkins KM, Hutson JM. The potential energy surface of He–HCN determined by fitting to high‐resolution spectroscopic data. J Chem Phys 1996. [DOI: 10.1063/1.471897] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|