Theoretical study of a positron-attachment to vibrational excited states for non-polar carbon disulfide molecule
Theoretical study of a positron-attachment to vibrational excited states for non-polar carbon disulfide molecule
复制标题
非极性二硫化碳分子振动激发态正电子附着的理论研究
DOI:
10.1140/epjd/e2016-70140-7
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
and M. Tachikawa,
中科院分区:
文献类型:
--
作者:
Y. Takeda;Y. Kita;and M. Tachikawa,
AbstractWe theoretically analyzed a positron affinity (PA), which is the binding energy of a positron, of the non-polar carbon disulfide (CS2) molecule at vibrational excited states to elucidate the effect of molecular vibrations on the binding of positron to the molecule. Using the configuration interaction method of the multi-component molecular orbital theory and anharmonic vibrational state analysis with vibrational quantum Monte Carlo technique, the vibrational averaged PA values are calculated as 0.39, 2.03, and 5.02 meV for the ground state, fundamental tone, and overtone states of asymmetric stretching mode, respectively. The PA value of CS2molecule is found to be enhanced by the vibrational excitation of only asymmetric stretching mode compared to the value at the vibrational ground state. With the linear regression analysis, we have confirmed that such enhancement of vibrational averaged PA values mainly arises from the increment of molecular permanent dipole moment due to the vibrational excitations of the asymmetric stretching mode.Graphical abstract
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DOI:
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发表时间:
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期刊:
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作者:
通讯作者:
--
DOI:
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发表时间:
2013
期刊:
Physical Chemistry, Chemical Physics - PCCP
影响因子:
--
作者:
K. Koyanagi;Y. Takeda;T. Oyamada;Y. Kita;M. Tachikawa
通讯作者:
M. Tachikawa
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
J. Young;C. Surko
通讯作者:
C. Surko
DOI:
10.1063/1.479174
发表时间:
1999
期刊:
影响因子:
--
作者:
G. Brasen;W. Demtröder
通讯作者:
W. Demtröder
影响因子:
8.6
作者:
Danielson, J. R.;Jones, A. C. L.;Surko, C. M.
通讯作者:
Surko, C. M.