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A Semiempirical Analysis of Perturbations in the Triplet 3s, 3d Complex of Molecular Hydrogen : The Radiative Lifetimes for Rovibronic Levels of the h 3g+, g3g +, i3Πg+, and j 3Δg+ States of h2. / Astashkevich, S. A.; Lavrov, B. P.

в: Optics and Spectroscopy (English translation of Optika i Spektroskopiya), Том 93, № 3, 01.09.2002, стр. 380-388.

Результаты исследований: Научные публикации в периодических изданияхстатьяРецензирование

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@article{d47ac123284a43f8880aa8e7a4b42838,
title = "A Semiempirical Analysis of Perturbations in the Triplet 3s, 3d Complex of Molecular Hydrogen: The Radiative Lifetimes for Rovibronic Levels of the h 3∑g+, g3∑g +, i3Πg+, and j 3Δg+ States of h2",
abstract = "The dependences of the radiative lifetimes τnvNfor rovibronic levels of the h3∑g+, g 3∑g+, i3Πg +, and j3Δg+ states on the vibrational, v, and rotational, N, quantum numbers (v = 0-3 and N = 1-6) of H2 have been derived for the first time. We calculated the absolute values of τnvN in terms of a nonadiabatic model that incorporates the interaction between the (3sσ)3∑ g+, (3dσ)3∑g+, (3dπ)3Πg+, and (3dδ) 3Δg+ states by using our semiempirical expansion coefficients for the wave functions in the Born-Oppenheimer basis and the dipole moments for electronic transitions to the (2pσ) 3∑u+ and (2pπ)3Π u states. We analyze the perturbations of the radiative lifetimes for rovibronic levels of the h3∑g+, g 3∑g+, i3Πg +, and j3Δg+ states in the triplet 3s, 3d complex of H2. Considerable differences (reaching a factor of 5 for h3∑g+ and a factor of 2 for i3πg+) were found between the nonadiabatic and adiabatic radiative lifetimes of rovibronic levels. These differences can be explained both by a significant effect of the (3sσ)3∑g+ state in the i 3Πg+ perturbation and by a considerable difference (reaching an order of magnitude) between the adiabatic values of τnvN for (3sσ)3∑g+ and (3dπ)3Πg+. The differences between the nonadiabatic and adiabatic lifetimes for rovibronic levels of the g 3∑g+ and j3Δ g+ states are much smaller (no more than 11%).",
author = "Astashkevich, {S. A.} and Lavrov, {B. P.}",
year = "2002",
month = sep,
day = "1",
doi = "10.1134/1.1509818",
language = "English",
volume = "93",
pages = "380--388",
journal = "OPTICS AND SPECTROSCOPY",
issn = "0030-400X",
publisher = "Pleiades Publishing",
number = "3",

}

RIS

TY - JOUR

T1 - A Semiempirical Analysis of Perturbations in the Triplet 3s, 3d Complex of Molecular Hydrogen

T2 - The Radiative Lifetimes for Rovibronic Levels of the h 3∑g+, g3∑g +, i3Πg+, and j 3Δg+ States of h2

AU - Astashkevich, S. A.

AU - Lavrov, B. P.

PY - 2002/9/1

Y1 - 2002/9/1

N2 - The dependences of the radiative lifetimes τnvNfor rovibronic levels of the h3∑g+, g 3∑g+, i3Πg +, and j3Δg+ states on the vibrational, v, and rotational, N, quantum numbers (v = 0-3 and N = 1-6) of H2 have been derived for the first time. We calculated the absolute values of τnvN in terms of a nonadiabatic model that incorporates the interaction between the (3sσ)3∑ g+, (3dσ)3∑g+, (3dπ)3Πg+, and (3dδ) 3Δg+ states by using our semiempirical expansion coefficients for the wave functions in the Born-Oppenheimer basis and the dipole moments for electronic transitions to the (2pσ) 3∑u+ and (2pπ)3Π u states. We analyze the perturbations of the radiative lifetimes for rovibronic levels of the h3∑g+, g 3∑g+, i3Πg +, and j3Δg+ states in the triplet 3s, 3d complex of H2. Considerable differences (reaching a factor of 5 for h3∑g+ and a factor of 2 for i3πg+) were found between the nonadiabatic and adiabatic radiative lifetimes of rovibronic levels. These differences can be explained both by a significant effect of the (3sσ)3∑g+ state in the i 3Πg+ perturbation and by a considerable difference (reaching an order of magnitude) between the adiabatic values of τnvN for (3sσ)3∑g+ and (3dπ)3Πg+. The differences between the nonadiabatic and adiabatic lifetimes for rovibronic levels of the g 3∑g+ and j3Δ g+ states are much smaller (no more than 11%).

AB - The dependences of the radiative lifetimes τnvNfor rovibronic levels of the h3∑g+, g 3∑g+, i3Πg +, and j3Δg+ states on the vibrational, v, and rotational, N, quantum numbers (v = 0-3 and N = 1-6) of H2 have been derived for the first time. We calculated the absolute values of τnvN in terms of a nonadiabatic model that incorporates the interaction between the (3sσ)3∑ g+, (3dσ)3∑g+, (3dπ)3Πg+, and (3dδ) 3Δg+ states by using our semiempirical expansion coefficients for the wave functions in the Born-Oppenheimer basis and the dipole moments for electronic transitions to the (2pσ) 3∑u+ and (2pπ)3Π u states. We analyze the perturbations of the radiative lifetimes for rovibronic levels of the h3∑g+, g 3∑g+, i3Πg +, and j3Δg+ states in the triplet 3s, 3d complex of H2. Considerable differences (reaching a factor of 5 for h3∑g+ and a factor of 2 for i3πg+) were found between the nonadiabatic and adiabatic radiative lifetimes of rovibronic levels. These differences can be explained both by a significant effect of the (3sσ)3∑g+ state in the i 3Πg+ perturbation and by a considerable difference (reaching an order of magnitude) between the adiabatic values of τnvN for (3sσ)3∑g+ and (3dπ)3Πg+. The differences between the nonadiabatic and adiabatic lifetimes for rovibronic levels of the g 3∑g+ and j3Δ g+ states are much smaller (no more than 11%).

UR - http://www.scopus.com/inward/record.url?scp=0141650608&partnerID=8YFLogxK

U2 - 10.1134/1.1509818

DO - 10.1134/1.1509818

M3 - Article

AN - SCOPUS:0141650608

VL - 93

SP - 380

EP - 388

JO - OPTICS AND SPECTROSCOPY

JF - OPTICS AND SPECTROSCOPY

SN - 0030-400X

IS - 3

ER -

ID: 33268273