Theoretical investigation of the binding of a positron to vibrational excited states of hydrogen cyanide molecule
Theoretical investigation of the binding of a positron to vibrational excited states of hydrogen cyanide molecule
复制标题
正电子与氰化氢分子振动激发态结合的理论研究
DOI:
10.1140/epjd/e2014-40799-9
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Yukiumi Kita and Masanori Tachikawa
中科院分区:
文献类型:
--
作者:
K. Yamada;Y. Kawashima;M. Tachikawa;Yukiumi Kita and Masanori Tachikawa
We theoretically analyzed positron affinities (PA) of hydrogen cyanide (HCN) molecule at vibrational excited states to elucidate the effect of molecular vibrations on the binding of a positron to the molecule. Using the configuration interaction method in the multi-component molecular orbital theory and anharmonic vibrational state analysis with the variational Monte Carlo technique, we found that the vibrational excitations of the CN and CH stretching modes enhance the PA value compared to that of the vibrational ground state, whereas the excitation of bending mode deenhances it. The largest PA enhancement is found at the excited states of the CH stretching mode; the PA values are 43.02 (1) and 46.34 (2) meV for the fundamental tone and overtone states, respectively. With the linear regression analysis, we confirmed that the PA variation of HCN molecule at each vibrational state arises from the variation of permanent dipole moment and dipole-polarizability due to each vibrational excitation.
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DOI:
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发表时间:
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影响因子:
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作者:
通讯作者:
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影响因子:
2.9
作者:
Danielson, J. R.;Jones, A. C. L.;Surko, C. M.
通讯作者:
Surko, C. M.
DOI:
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发表时间:
2006
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影响因子:
--
作者:
J. Mitroy
通讯作者:
J. Mitroy
DOI:
--
发表时间:
2008
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影响因子:
--
作者:
J. Young;C. Surko
通讯作者:
C. Surko
影响因子:
2.8
作者:
CHRISTOFFEL, KM;BOWMAN, JM
通讯作者:
BOWMAN, JM