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Dynamic dipole polarizabilities for the low-lying triplet states of helium

Zhang, Yong-Hui, Tang, Li-Yan, Zhang, Xian-Zhou and Shi, Ting-Yun (2015). Dynamic dipole polarizabilities for the low-lying triplet states of helium. Physical Review A: Atomic, Molecular and Optical Physics,92(1).

Document type: Journal Article
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IRMA ID 83393865xPUB259
Title Dynamic dipole polarizabilities for the low-lying triplet states of helium
Author Zhang, Yong-Hui
Tang, Li-Yan
Zhang, Xian-Zhou
Shi, Ting-Yun
Journal Name Physical Review A: Atomic, Molecular and Optical Physics
Publication Date 2015
Volume Number 92
Issue Number 1
ISSN 1050-2947   (check CDU catalogue  open catalogue search in new window)
Scopus ID 2-s2.0-84938709358
Place of Publication United States
Publisher Academic Press
Field of Research ENGINEERING
HERDC Category C1 - Journal Article (DIISR)
Abstract The dynamic dipole polarizabilities for the four lowest triplet states (23S, 33S, 23P, and 33P) of helium are calculated using the B-spline configuration interaction method. Present values of the static dipole polarizabilities in the length, velocity, and acceleration gauges are in good agreement with the best Hylleraas results. Also the tune-out wavelengths in the range 400 nm–4.2 μm for the four lowest triplet states are identified, and the magic wavelengths in the range 460 nm–3.5 μm for the 23S→33S, 23S→23P, and 23S→33P transitions are determined. We show that the tune-out wavelength of 23S state is 413.03828(3) nm, which corroborates the value of Mitroy and Tang [Phys. Rev. A 88, 052515 (2013)], and the magic wavelength around 1066 nm for the 23S→33P transition can be expected for precision measurement to determine the ratio of transition matrix elements (23S→23P)/(33P→63S).
DOI http://dx.doi.org/10.1103/PhysRevA.92.012515   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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