Polarizabilities of Rn-like Th4+ from rf spectroscopy of Th3+ Rydberg levels

Details Polarizabilities of Rn-like Th4+ from rf spectroscopy of Th3+ Rydberg levels Polarizabilities of Rn-like Th4+ from rf spectroscopy of Th3+ Rydberg levels

2011-04-22

arxiv.org/abs/1104.4487v1

Physical Review A 83, 062509 (2011)

Physics

Atomic Physics

19 pages, 3 figures, 3 tables

Scientific paper

10.1103/PhysRevA.83.062509

High resolution studies of the fine structure pattern in high-L n=37 levels of Th3+ have been carried out using radio-frequency (rf) spectroscopy detected with Resonant Excitation Stark Ionization Spectroscopy (RESIS). Intervals separating L=9 to L=15 levels have been measured, and the results analyzed with the long-range effective potential model. The dipole polarizability of Th4+is determined to be aD= 7.720(7) a.u.. The quadrupole polarizability is found to be 21.5(3.9) a.u. Both measurements represent significant tests of a-priori theoretical descriptions of this highly relativistic ion.

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