Series of Doubly Excited Quartet States ofHe−
| Autor: | I. Yu. Kiyan, D. J. Pegg, U. Berzinsh, Dag Hanstorp |
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| Rok vydání: | 1998 |
| Předmět: | |
| Zdroj: | Physical Review Letters. 81:2874-2877 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.81.2874 |
| Popis: | Twelve previously unobserved Feshbach resonances associated with the autodetaching decay of doubly excited states of He{sup {minus}} have been observed in the process of photodetachment. Seven resonant states of {sup 4}P symmetry and one of {sup 4}S symmetry have been identified in the energy range which encompasses the He(n=4,thinsp5) thresholds. Their measured energies and widths agree with recent calculations. A functional form representing the energies of members of the {sup 4}P series has been derived. This form is fundamentally different from the Rydberg-dipole formula that describes doubly excited states of H{sup {minus}} . {copyright} {ital 1998} {ital The American Physical Society } |
| Databáze: | OpenAIRE |
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