Assessments of lifetimes and photoionization cross-sections at 10.6 µm of nd Rydberg states of Rb measured in a magneto-optical trap

Year: 2006

Authors: Gabbanini C.

Autors Affiliation: Istituto per i Processi Chimico-Fisici del C.N.R., Via G.Moruzzi 1, 56127 Pisa, Italy

Abstract: By using IR laser photoionization in a magneto-optical trap, radiative lifetimes of rubidium Rydberg nd states (n = 16-20) have been measured. The measured lifetimes are: 4.63 mu s for the 16d state, 5.39 mu s (17d), 6.74 mu s (18d), 8.06 mu s (19d) and 8.99 mu s (20d). The experimental values are in agreement with previous theoretical calculations. The reported method allows also for a measurement of the photoionization cross-sections of the specified Rydberg states at 10.6 mu m. In this case the experimental values (ranging from 39Mb for the 16d state to 30Mb for the 20d state) look inconsistent with theoretical calculations. (c) 2006 Elsevier B.V. All rights reserved.

Journal/Review: SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY

Volume: 61 (2)      Pages from: 196  to: 199

More Information: HPRN-CT-2002-00290. – The work is partly supported by European RTN COLMOL (HPRN-CT-2002-00290).
KeyWords: Photoionization; Rydberg state
DOI: 10.1016/j.sab.2006.01.003

Citations: 6
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