English
Related papers

Related papers: Reconciling Experimental and Theoretical Vibration…

200 papers

We present a theoretical study of rotationally elastic and inelastic collisions between molecular nitrogen ions and Rb atoms in the sub-Kelvin temperature regime prevalent in ion-atom hybrid trapping experiments. The cross sections for…

The physics of vibrational kinetics in nitrogen-containing plasma produced by collisions with electrons is studied on the basis of recently derived cross sections and rate coefficients for the resonant vibrational-excitation by…

Chemical Physics · Physics 2013-04-17 V. Laporta , D. Bruno

Ultracold collisions between spin-polarized Na atoms and vibrationally excited Na_2 molecules are investigated theoretically, using both an inelastic formalism (neglecting atom exchange channels) and a reactive formalism (including atom…

Soft Condensed Matter · Physics 2009-11-07 Pavel Soldan , Marko T. Cvitas , Jeremy M. Hutson , Pascal Honvault , Jean-Michel Launay

Hybrid ion-atom systems provide an excellent platform for studies of state-resolved quantum chemistry at low temperatures, where quantum effects may be prevalent. Here we study theoretically the process of vibrational relaxation of an…

Atomic Physics · Physics 2020-04-01 Krzysztof Jachymski , Florian Meinert

A full set of vibrationally-resolved cross sections for electron impact excitation of NO(X2{\Pi}, v) molecules is calculated from ab initio molecular dynamics, in the framework of the local-complex-potential approach. Electron-vibration…

Atomic Physics · Physics 2024-11-15 V Laporta , L Vialetto , V Guerra

Cold collisions of ground state oxygen molecules with Helium have been investigated in a wide range of cold collision energies (from 1 $\mu$K up to 10 K) treating the oxygen molecule first as a rigid rotor and then introducing the…

Quantum Physics · Physics 2009-11-07 Alessandro Volpi , John L. Bohn

Exploring inelastic and reactive collisions on the quantum level is a main goal of the developing field of ultracold chemistry. We present first experimental studies of inelastic collisions of metastable ultracold triplet molecules in the…

Collision cross sections and rate constants between two ground- state oxygen molecules are investigated theoretically at translational energies below $\sim 1$K and in zero magnetic field. We present calculations for elastic and spin-…

Atomic Physics · Physics 2009-11-07 Alexandr V. Avdeenkov , John L. Bohn

This work explores the effect of O2 addition on CO2 dissociation and on the vibrational kinetics of CO2 and CO under various non-equilibrium plasma conditions. A self-consistent model, previously validated for pure CO2 discharges, is…

Plasma Physics · Physics 2023-11-14 C. Fromentin , T. Silva , T. C. Dias , A. S. Morillo-Candas , O. Biondo , O. Guaitella , V. Guerra

Non-equilibrium vibrational dissociation of CO$_2$ at low translational-rotational temperatures $T$ is investigated computationally for conditions of microwave induced plasmas. Semi-analytic treatment of vibrational relaxation in CO$_2$ in…

Plasma Physics · Physics 2022-09-08 Vladislav Kotov

This work constructs a rovibrational state-to-state model for the $\text{O}_2$+$\text{O}_2$ system leveraging high-fidelity potential energy surfaces and quasi-classical trajectory calculations. The model is used to investigate internal…

Chemical Physics · Physics 2022-11-01 Sung Min Jo , Simone Venturi , Jae Gang Kim , Marco Panesi

The change of the vibrational energy within a molecule after collisions with another molecule plays an essential role in the evolution of molecular internal energy distributions, which is also the limiting process in the relaxation of the…

Chemical Physics · Physics 2024-09-16 Xiaorui Zhao , Xuefei Xu , Haitao Xu

We present a study of vibrational quenching and chemical processes of molecular ions immersed in an ultracold atomic gas by means of the quasi-classical trajectory (QCT) method. In particular, BaRb$^+(v)$ + Rb collisions are studied at cold…

Atomic Physics · Physics 2019-02-27 Jesús Pérez-Ríos

We present a rigorous study of vibrational relaxation in p-H2 + p-H2 collisions at cold and ultracold temperatures and identify an efficient mechanism of ro-vibrational energy transfer. If the colliding molecules are in different rotational…

Quantum Physics · Physics 2008-04-02 Goulven Quéméner , Naduvalath Balakrishnan , Roman V. Krems

In order to improve our understanding of the kinetics of the cometary coma, theoretical studies of the major reactive collisions in these environments are needed. Deep in the collisional coma, inelastic collisions between thermal electrons…

Earth and Planetary Astrophysics · Physics 2018-07-18 Y. Moulane , J. Zs. Mezei , V. Laporta , E. Jehin , Z. Benkhaldoun , I. F. Schneider

This work explores the effect of N2 addition on CO2 dissociation and on the vibrational kinetics of CO2 and CO under various non-equilibrium plasma conditions. A self-consistent kinetic model, previously validated for pure CO2 and CO2-O2…

Plasma Physics · Physics 2023-05-31 C. Fromentin , T. Silva , T. C. Dias , E. Baratte , O. Guaitella , V. Guerra

The vibrational quenching cross sections and corresponding low-temperature rate constants for the v = 1 and v = 2 states of CN- colliding with He and Ar atoms have been computed ab initio using new three dimensional potential energy…

Cold collisions of $^{14}$N$^{16}$O molecules in the $^{2}\Pi_{1/2}$ ground state, subject to electric and magnetic fields, are investigated. It is found that elastic collision rates significantly exceed state-changing inelastic rates only…

Atomic Physics · Physics 2017-10-25 Lucie D. Augustovičová , John L. Bohn

The understanding of the ro-vibrational dynamics in molecular (near)-atmospheric pressure plasmas is essential to investigate the influence of vibrational excited molecules on the discharge properties. In a companion paper, results of…

Plasma Physics · Physics 2021-07-07 Jan Kuhfeld , Dirk Luggenhölscher , Uwe Czarnetzki

Using time-resolved infrared-vacuum-ultraviolet double-resonance spectroscopy, experimental room temperature measurements of state-to-state rate coefficients for rotational energy transfer within the X $^1\Sigma^+(v=2)$ vibrational state of…

Quantum Physics · Physics 2026-03-10 Hamza Labiad , Alexandre Faure , Ian R. Sims
‹ Prev 1 2 3 10 Next ›