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Title: Dynamic scalar and tensor polarizabilities of the 2 [sup 1][ital P] and 2 [sup 3][ital P] states of He

Abstract

The dynamic dipole polarizabilities at real and imaginary frequencies have been determined for the helium atom in its lowest singlet and triplet 2[ital P] states, using our time-dependent gauge-invariant method. Contributions of the 2[ital S] states to static polarizabilities are strong and negative, particularly in the case of the singlet 2 [sup 1][ital P] state, for which the static scalar polarizability [alpha][sub 0] is negative. The tensor polarizability [alpha][sub 2] corresponding to the differential Stark shift between the [ital m] Zeeman sublevels was also calculated and compared to previous theoretical and experimental results for the singlet 2 [sup 1][ital P] state. An evaluation of the [ital C][sub 6] dispersion coefficients for the 2 [sup 1][ital P]--2 [sup 1][ital P] and 2 [sup 3][ital P]--2 [sup 3][ital P] systems is also given, derived from the dynamic polarizabilities at imaginary pulsations [omega].

Authors:
;  [1]
  1. Laboratoire de Chimie Structurale, Universite de Pau, 64000 Pau (France)
Publication Date:
OSTI Identifier:
5191319
Resource Type:
Journal Article
Journal Name:
Physical Review A; (United States)
Additional Journal Information:
Journal Volume: 49:2; Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; HELIUM; POLARIZABILITY; CALCULATION METHODS; DIPOLES; FREQUENCY DEPENDENCE; GAUGE INVARIANCE; P STATES; SCALARS; TENSORS; TIME DEPENDENCE; TRIPLETS; ELECTRICAL PROPERTIES; ELEMENTS; ENERGY LEVELS; FLUIDS; GASES; INVARIANCE PRINCIPLES; MULTIPLETS; MULTIPOLES; NONMETALS; PHYSICAL PROPERTIES; RARE GASES; 664100* - Theory of Electronic Structure of Atoms & Molecules- (1992-)

Citation Formats

Rerat, M, and Pouchan, C. Dynamic scalar and tensor polarizabilities of the 2 [sup 1][ital P] and 2 [sup 3][ital P] states of He. United States: N. p., 1994. Web. doi:10.1103/PhysRevA.49.829.
Rerat, M, & Pouchan, C. Dynamic scalar and tensor polarizabilities of the 2 [sup 1][ital P] and 2 [sup 3][ital P] states of He. United States. https://doi.org/10.1103/PhysRevA.49.829
Rerat, M, and Pouchan, C. 1994. "Dynamic scalar and tensor polarizabilities of the 2 [sup 1][ital P] and 2 [sup 3][ital P] states of He". United States. https://doi.org/10.1103/PhysRevA.49.829.
@article{osti_5191319,
title = {Dynamic scalar and tensor polarizabilities of the 2 [sup 1][ital P] and 2 [sup 3][ital P] states of He},
author = {Rerat, M and Pouchan, C},
abstractNote = {The dynamic dipole polarizabilities at real and imaginary frequencies have been determined for the helium atom in its lowest singlet and triplet 2[ital P] states, using our time-dependent gauge-invariant method. Contributions of the 2[ital S] states to static polarizabilities are strong and negative, particularly in the case of the singlet 2 [sup 1][ital P] state, for which the static scalar polarizability [alpha][sub 0] is negative. The tensor polarizability [alpha][sub 2] corresponding to the differential Stark shift between the [ital m] Zeeman sublevels was also calculated and compared to previous theoretical and experimental results for the singlet 2 [sup 1][ital P] state. An evaluation of the [ital C][sub 6] dispersion coefficients for the 2 [sup 1][ital P]--2 [sup 1][ital P] and 2 [sup 3][ital P]--2 [sup 3][ital P] systems is also given, derived from the dynamic polarizabilities at imaginary pulsations [omega].},
doi = {10.1103/PhysRevA.49.829},
url = {https://www.osti.gov/biblio/5191319}, journal = {Physical Review A; (United States)},
issn = {1050-2947},
number = ,
volume = 49:2,
place = {United States},
year = {Tue Feb 01 00:00:00 EST 1994},
month = {Tue Feb 01 00:00:00 EST 1994}
}