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Nongni FT, Kalus R, Benhenni M, Gadéa FX, Yousfi M. Ternary recombination of excited Ar+(P1/22) ions, established experimental results reinterpreted with a new extended model. J Chem Phys 2024; 160:161101. [PMID: 38647297 DOI: 10.1063/5.0202524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 04/07/2024] [Indexed: 04/25/2024] Open
Abstract
For many years, the recombination of excited ions of argon, Ar+(P1/22), has been assumed negligible under ambient conditions as compared to the recombination of ground-state ions, Ar+(P3/22). This opinion was confronted with detailed experimental results that seem to clearly support it. Here, we propose a new interpretation in light of our recent calculations, which shows that the recombination efficiency is comparable for both fine-structure states. Noteworthily, in our model leading to a picture consistent with the experiment, residual dimer ions emerge from Ar+(P1/22) due to non-adiabatic dynamics effects and interplay in measured data.
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Affiliation(s)
- F T Nongni
- Laboratoire Plasma et Conversion d'Energie, LAPLACE and UMR5213 du CNRS, Université Toulouse III-Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex, France
- Faculty of Electrical Engineering and Computer Science, VŠB-Technical University of Ostrava, 17. Listopadu 2172/15, 70800 Ostrava-Poruba, Czech Republic
| | - R Kalus
- Department of Applied Mathematics, Faculty of Electrical Engineering and Computer Science, VŠB-Technical University of Ostrava, 17. Listopadu 2172/15, 70800 Ostrava-Poruba, Czech Republic
| | - M Benhenni
- Laboratoire Plasma et Conversion d'Energie, LAPLACE and UMR5213 du CNRS, Université Toulouse III-Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex, France
| | - F X Gadéa
- Laboratoire de Chimie et Physique Quantiques, UMR5626 du CNRS, Université Toulouse III-Paul Sabatier,118 route de Narbonne, 31062 Toulouse Cedex 09, France
| | - M Yousfi
- Laboratoire Plasma et Conversion d'Energie, LAPLACE and UMR5213 du CNRS, Université Toulouse III-Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex, France
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Kalus R, Janeček I, Gadéa FX. Non-adiabatic dynamics combining Ehrenfest, decoherence, and multiscale approaches applied to ionic rare-gas clusters photodissociation, post-ionization fragmentation, and collisions. COMPUT THEOR CHEM 2019. [DOI: 10.1016/j.comptc.2019.02.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Van de Steen C, Benhenni M, Kalus R, Ćosić R, Illésová S, Gadéa FX, Yousfi M. Calculations of cross-sections, dissociation rate constants and transport coefficients of Xe 2+ colliding with Xe. Phys Chem Chem Phys 2019; 21:7029-7038. [DOI: 10.1039/c9cp00338j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A quantum formalism and classical treatment have been used for electrons and nuclei, respectively, in a hybrid method in order to study the dynamics of electronically ground-state ionic xenon dimer, Xe2+, in its parent gas.
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Affiliation(s)
- Cyril Van de Steen
- IT4Innovations
- VSB – Technical University of Ostrava
- 708 33 Ostrava-Poruba
- Czech Republic
- Laboratoire Plasma et Conversion d'Energie
| | - Malika Benhenni
- Laboratoire Plasma et Conversion d'Energie
- LAPLACE & UMR5213 du CNRS
- Université de Toulouse III Paul Sabatier
- 31062 Toulouse Cedex 09
- France
| | - René Kalus
- IT4Innovations
- VSB – Technical University of Ostrava
- 708 33 Ostrava-Poruba
- Czech Republic
| | - Rajko Ćosić
- IT4Innovations
- VSB – Technical University of Ostrava
- 708 33 Ostrava-Poruba
- Czech Republic
- Department of Applied Mathematics
| | - Silvie Illésová
- IT4Innovations
- VSB – Technical University of Ostrava
- 708 33 Ostrava-Poruba
- Czech Republic
- Frýdlant nad Ostravicí Grammar School
| | - Florent Xavier Gadéa
- Laboratoire de Chimie et de Physique Quantiques
- IRSAMC & UMR5626 du CNRS
- Université de Toulouse III Paul Sabatier
- 31062 Toulouse Cedex 09
- France
| | - Mohammed Yousfi
- Laboratoire Plasma et Conversion d'Energie
- LAPLACE & UMR5213 du CNRS
- Université de Toulouse III Paul Sabatier
- 31062 Toulouse Cedex 09
- France
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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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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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Stachoň M, Vítek A, Kalus R. Photodissociation of medium-sized argon cluster cations in the visible region. Phys Chem Chem Phys 2015; 17:32413-24. [DOI: 10.1039/c5cp05257b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Semiclassical methods for non-adiabatic dynamics simulations, based on a semiempirical diatomics-in-molecules model of intracluster interactions and the mean-field dynamical approach with the inclusion of quantum decoherence, have been used to study the photodissociation of argon cluster cations, ArN+ (N = 6–19), at Ephot = 2.35 eV.
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Affiliation(s)
- Martin Stachoň
- IT4Innovations National Supercomputing Center
- VSB – Technical University of Ostrava
- 708 33 Ostrava
- Czech Republic
| | - Aleš Vítek
- IT4Innovations National Supercomputing Center
- VSB – Technical University of Ostrava
- 708 33 Ostrava
- Czech Republic
| | - René Kalus
- IT4Innovations National Supercomputing Center & Department of Applied Mathematics
- VSB – Technical University of Ostrava
- 708 33 Ostrava
- Czech Republic
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Chicheportiche A, Stachoň M, Benhenni M, Gadéa FX, Kalus R, Yousfi M. First principles transport coefficients and reaction rates of Ar2(+) ions in argon for cold plasma jet modeling. J Chem Phys 2014; 141:134302. [PMID: 25296801 DOI: 10.1063/1.4896613] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Momentum-transfer collision cross-sections and integral collision cross-sections for the collision-induced dissociation are calculated for collisions of ionized argon dimers with argon atoms using a nonadiabatic semiclassical method with the electronic Hamiltonian calculated on the fly via a diatomics-in-molecules semiempirical model as well as inverse-method modeling based on simple isotropic rigid-core potential. The collision cross-sections are then used in an optimized Monte Carlo code for evaluations of the Ar 2 (+) mobility in argon gas, longitudinal diffusion coefficient, and collision-induced dissociation rates. A thorough comparison of various theoretical calculations as well as with available experimental data on the Ar 2 (+) mobility and collision cross-sections is performed. Good agreement is found between both theoretical approaches and the experiment. Analysis of the role of inelastic processes in Ar 2 (+)/Ar collisions is also provided.
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Affiliation(s)
- Alexandre Chicheportiche
- Laboratoire Plasma et Conversion d'Energie, LAPLACE and UMR5213 du CNRS, Université de Toulouse, UPS, 118 route de Narbonne, 31062 Toulouse Cedex, France
| | - Martin Stachoň
- Center of Excellence IT4Innovations and Department of Applied Mathematics, VSB - Technical University of Ostrava, 17. listopadu 15, 708 33 Ostrava, Czech Republic
| | - Malika Benhenni
- Laboratoire Plasma et Conversion d'Energie, LAPLACE and UMR5213 du CNRS, Université de Toulouse, UPS, 118 route de Narbonne, 31062 Toulouse Cedex, France
| | - Florent Xavier Gadéa
- Laboratoire de Chimie et de Physique Quantiques, IRSAMC and UMR5626 du CNRS, Université de Toulouse, UPS, 118 route de Narbonne, 31062 Toulouse Cedex, France
| | - René Kalus
- Center of Excellence IT4Innovations and Department of Applied Mathematics, VSB - Technical University of Ostrava, 17. listopadu 15, 708 33 Ostrava, Czech Republic
| | - Mohammed Yousfi
- Laboratoire Plasma et Conversion d'Energie, LAPLACE and UMR5213 du CNRS, Université de Toulouse, UPS, 118 route de Narbonne, 31062 Toulouse Cedex, France
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Chicheportiche A, Benhenni M, Yousfi M, Lepetit B, Kalus R, Gadea FX. Ion collision cross sections and transport coefficients extended to intermediate energies and reduced electric fields for He(2)(+) ions colliding with He. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2013; 88:043104. [PMID: 24229290 DOI: 10.1103/physreve.88.043104] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Indexed: 06/02/2023]
Abstract
This work is devoted to the calculation of transport coefficients for He(2)(+) ions in gaseous He at intermediate reduced electric fields. These swarm data are of great interest for a better understanding of the mechanisms of formation and propagation of the fast plasma bullets or ionization waves observed in dielectric barrier plasma jet devices. For transport data, the collision cross sections required are determined from several theoretical methods based on quantum, semiclassical, and hybrid approaches and a diatomics-in-molecules model for the potential energy surfaces of He(2)(+). The corresponding collision cross sections are then used in an optimized Monte Carlo code to calculate the ion transport coefficients over a wide range of reduced electric fields extending over the experimental range. Calculated transport coefficients are compared with available experimental data at low electric fields. Moreover, an extrapolation method is used in order to determine the reduced mobility for stronger fields. A critical discussion has been performed on the pertinence and the reliability of these different methods of determination of collision cross sections needed for the calculation of ion transport data. Such ion data will be used in electrohydrodynamic and chemical kinetic models of the low-temperature plasma jet to quantify and to tune the active species production for a better use in biomedical applications.
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Affiliation(s)
- A Chicheportiche
- Université de Toulouse, UPS, Laboratoire Plasma et Conversion d'Energie, LAPLACE, Toulouse, France and CNRS, UMR 5213, F-31062 Toulouse, France
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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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Structure and dynamics of noble gas-halogen and noble gas ionic clusters: When theory meets experiment. Chem Phys 2012. [DOI: 10.1016/j.chemphys.2011.05.026] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Svrčková P, Vítek A, Karlický F, Paidarová I, Kalus R. Theoretical modeling of ionization energies of argon clusters: nuclear delocalization effects. J Chem Phys 2011; 134:224310. [PMID: 21682517 DOI: 10.1063/1.3599052] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Temperature dependence of vertical ionization energies is modeled for small argon clusters (N ≤ 13) using classical parallel-tempering Monte Carlo methods and extended interaction models based on the diatomics-in-molecules approach. Quantum effects at the zero temperature are also discussed in terms of zero-point nuclear vibrations, either at the harmonic approximation level or at the fully anharmonic level using the diffusion Monte Carlo calculations. Both approaches lead to a considerable improvement of the theoretical predictions of argon clusters ionization energies and represent a realistic way of modeling of ionization energies for weakly bound and floppy complexes in general. A thorough comparison with a recent electron-impact experiment [O. Echt et al., J. Chem. Phys. 123, 084313 (2005)] is presented and a novel interpretation of the experimental data is proposed.
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Affiliation(s)
- Pavla Svrčková
- Department of Physics, University of Ostrava, 30. dubna 22, 701 03 Ostrava, Czech Republic
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Granucci G, Persico M. Gradients for configuration interaction energies with spin-orbit coupling in a semiempirical framework. J Comput Chem 2011; 32:2690-6. [DOI: 10.1002/jcc.21850] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Revised: 05/12/2011] [Accepted: 05/12/2011] [Indexed: 11/07/2022]
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Karlický F, Lepetit B, Kalus R, Gadéa FX. Vibrational spectrum of Ar3(+) and relative importance of linear and perpendicular isomers in its photodissociation. J Chem Phys 2011; 134:084305. [PMID: 21361537 DOI: 10.1063/1.3555275] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The photodissociation dynamics of the argon ionized trimer Ar(3)(+) is revisited in the light of recent experimental results of Lepère et al. [J. Chem. Phys. 134, 194301 (2009)], which show that the fragment with little kinetic energy is always a neutral one, thus the available energy is shared by a neutral and ionic fragments as in Ar(2)(+). We show that these results can be interpreted as the photodissociation of the linear isomer of the system. We perform a 3D quantum computation of the vibrational spectrum of the system and study the relative populations of the linear (trimer-core) and perpendicular (dimer-core) isomers. We then show that the charge initially located on the central atom in the ground electronic state of the linear isomer migrates toward the extreme ones in the photoexcitation process such that photodissociation of the linear isomer produces a neutral central atom at rest in agreement with measured product state distributions.
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Affiliation(s)
- Frantisek Karlický
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University, Olomouc, Czech Republic.
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Pukowiecová P, Gadea FX, Kalus R. Photodissociation dynamics of ionic argon pentamer. J Chem Phys 2010; 133:214302. [DOI: 10.1063/1.3507873] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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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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Bonhommeau D, Halberstadt N, Buck U. Fragmentation of rare-gas clusters ionized by electron impact: new theoretical developments and comparison with experiments. INT REV PHYS CHEM 2007. [DOI: 10.1080/01442350701223045] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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