OBSERVATION OF CIRCULAR–METASTABLE DOUBLY EXCITED STATES OF BARIUM
1991 ◽
Vol 05
(18)
◽
pp. 1199-1202
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Keyword(s):
We report the observation of unusual doubly excited states of barium: Ba (5dj, 21c). One of the valence electrons of Ba is prepared in an oriented circular Rydberg state (n = 21, l = m = 20, denoted 21c) by the adiabatic crossed-fields method. The other electron is excited to a 6pj state which decays radiatively to a 5dj metastable level. The measured autoionization lifetime of Ba (5d5/2, 21c) is T ~ 1 μ s , whereas for Ba (5d3/2, 21c), τ is estimated to be longer than 400 μs. This very large difference of lifetimes between the fine-structure states of the inner electron has been analysed.
1988 ◽
Vol 102
◽
pp. 111-114
1988 ◽
Vol 49
(C1)
◽
pp. C1-111-C1-114
1997 ◽
Vol 30
(16)
◽
pp. 3597-3609
◽
1998 ◽
Vol 69
(1)
◽
pp. 101-124
◽