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

Yong Hui Zhang, Li Yan Tang, Xian Zhou Zhang, Ting Yun Shi

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    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)PLRAAN1050-294710.1103/PhysRevA.88.052515], 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).

    Original languageEnglish
    Article number012515
    Pages (from-to)-
    JournalPhysical Review A - Atomic, Molecular, and Optical Physics
    Issue number1
    Publication statusPublished - 24 Jul 2015


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