Photoassociation spectroscopy of cold He(2 3S) atoms |
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Authors: | Herschbach Tol Vassen Hogervorst Woestenenk Thomsen van Der Straten P Niehaus |
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Affiliation: | Department of Physics and Astronomy, Vrije Universiteit, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands. |
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Abstract: | We observe vibrational states by photoassociation spectroscopy of cold He(2 ^{3}S) atoms. Photoassociation resonances are detected as peaks in the Penning ionization rate over a frequency range of 20 GHz below the atomic 2 ^{3}S_{1}-2 ^{3}P_{2} 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. |
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