| Autor: |
H T Duong, J Pinard, P Juncar, Rainer Neugart, E. Arnold, W. Borchers, J Lerme, J L Vialle, M Pellarin, Isolde, Klaus Wendt, Walter Neu, Peter Lievens |
| Rok vydání: |
1990 |
| Předmět: |
|
| Zdroj: |
Journal of Physics B: Atomic, Molecular and Optical Physics. 23:3511-3520 |
| ISSN: |
0953-4075 |
| DOI: |
10.1088/0953-4075/23/20/014 |
| Popis: |
The authors present an extension to low-lying states of francium (10s, 11s, 8d, 9d) of a previously published high-resolution experiment performed on the ns and nd Rydberg levels. These four levels were investigated at CERN with the on-line mass separator ISOLDE using stepwise laser excitation in collinear geometry. Accurate energy measurements lead to a more reliable determination of the quantum defects of the whole ns and nd series, together with the ionization potential for 212Fr (nuclear spin I=5) which is found to be 32848.872 (9) cm-1. The measurement of the fine structure splittings for the nd 2D3/2, 5/2 doublets was completed at the same time. The main result of the study is the first observation and measurement of hyperfine structures in 2S and 2D states. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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