ISSN:
1434-6079
Keywords:
PACS. 31.50.+w Excited states - 32.30.Jc Visible and ultraviolet spectra - 32.80.Rm Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states)
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: We have investigated the electric field ionization of highly excited (ns) and (nd) Rydberg states of the barium ion by microwave fields. For states with a principal quantum number the observed microwave ionization threshold fields show the Z 3 /3n 5 dependence expected on the basis of previously observed ionization of neutral Rydberg states with Z=1. We show that for states in this n regime microwave ionization is a state selective detection technique. Threshold fields for states with n〉40, however, depart from the expected behaviour, the thresholds become broader and shift to higher fields. For a total of 58 states we present the field strengths where 90%, 50% and 10% ionization occur.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100500050145
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