Abstract
We observe vibrational states by photoassociation spectroscopy of cold He(2 3S) atoms. Photoassociation resonances are detected as peaks in the Penning ionization rate over a frequency range of 20 GHz below the atomic 2 3S1-2 3P2 transition frequency. We have observed three vibrational series, of which two can be identified. A possible mechanism to explain the observed increase of the Penning ionization rate is discussed.
| Original language | English |
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| Pages (from-to) | 1874-1877 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 84 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 1 Feb 2000 |