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Title: Cooling and quenching of {sup 24}MgH{sup +}(X {sup 1}{Sigma}{sup +}) by {sup 4}He({sup 1}S) in a Coulomb trap: A quantum study of the dynamics

Abstract

The quantum dynamics of the rotational quenching of the {sup 24}MgH{sup +}(X {sup 1}{Sigma}{sup +}) molecular cation interacting with {sup 4}He({sup 1}S) as a buffer gas, at relative temperatures ranging from 1 K down to millikelvins, is described by accurate close coupling scattering calculations on an ab initio potential energy surface. The efficiency of the process is quantitatively analyzed by employing the ab initio quenching rates and cross sections and effective decay rate values are obtained from simple unimolecular kinetics over a broad range of trap conditions.

Authors:
; ; ;  [1];  [2];  [3]
  1. Department of Chemistry, ''Sapienza'', University of Rome, Piazzale Aldo Moro 5, I-00185 Rome (Italy)
  2. (Turkey)
  3. (Italy)
Publication Date:
OSTI Identifier:
22051323
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 84; Journal Issue: 1; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CATIONS; COOLING; CROSS SECTIONS; EFFICIENCY; HELIUM 4; MAGNESIUM 24; POTENTIAL ENERGY; QUANTUM ELECTRODYNAMICS; QUENCHING; TRAPS

Citation Formats

Tacconi, M., Gianturco, F. A., Yurtsever, E., Caruso, D., Department of Chemistry, Koc University, Rumelifeneriyalu, Sariyer, TR-34450 Instabul, and Department of Chemistry, ''Sapienza,'' The University of Rome, Piazzale Aldo Moro 5, I-00185 Rome. Cooling and quenching of {sup 24}MgH{sup +}(X {sup 1}{Sigma}{sup +}) by {sup 4}He({sup 1}S) in a Coulomb trap: A quantum study of the dynamics. United States: N. p., 2011. Web. doi:10.1103/PHYSREVA.84.013412.
Tacconi, M., Gianturco, F. A., Yurtsever, E., Caruso, D., Department of Chemistry, Koc University, Rumelifeneriyalu, Sariyer, TR-34450 Instabul, & Department of Chemistry, ''Sapienza,'' The University of Rome, Piazzale Aldo Moro 5, I-00185 Rome. Cooling and quenching of {sup 24}MgH{sup +}(X {sup 1}{Sigma}{sup +}) by {sup 4}He({sup 1}S) in a Coulomb trap: A quantum study of the dynamics. United States. doi:10.1103/PHYSREVA.84.013412.
Tacconi, M., Gianturco, F. A., Yurtsever, E., Caruso, D., Department of Chemistry, Koc University, Rumelifeneriyalu, Sariyer, TR-34450 Instabul, and Department of Chemistry, ''Sapienza,'' The University of Rome, Piazzale Aldo Moro 5, I-00185 Rome. Fri . "Cooling and quenching of {sup 24}MgH{sup +}(X {sup 1}{Sigma}{sup +}) by {sup 4}He({sup 1}S) in a Coulomb trap: A quantum study of the dynamics". United States. doi:10.1103/PHYSREVA.84.013412.
@article{osti_22051323,
title = {Cooling and quenching of {sup 24}MgH{sup +}(X {sup 1}{Sigma}{sup +}) by {sup 4}He({sup 1}S) in a Coulomb trap: A quantum study of the dynamics},
author = {Tacconi, M. and Gianturco, F. A. and Yurtsever, E. and Caruso, D. and Department of Chemistry, Koc University, Rumelifeneriyalu, Sariyer, TR-34450 Instabul and Department of Chemistry, ''Sapienza,'' The University of Rome, Piazzale Aldo Moro 5, I-00185 Rome},
abstractNote = {The quantum dynamics of the rotational quenching of the {sup 24}MgH{sup +}(X {sup 1}{Sigma}{sup +}) molecular cation interacting with {sup 4}He({sup 1}S) as a buffer gas, at relative temperatures ranging from 1 K down to millikelvins, is described by accurate close coupling scattering calculations on an ab initio potential energy surface. The efficiency of the process is quantitatively analyzed by employing the ab initio quenching rates and cross sections and effective decay rate values are obtained from simple unimolecular kinetics over a broad range of trap conditions.},
doi = {10.1103/PHYSREVA.84.013412},
journal = {Physical Review. A},
issn = {1050-2947},
number = 1,
volume = 84,
place = {United States},
year = {2011},
month = {7}
}