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Isotope shift in the electron affinity of chlorine

Uldis Berzinsh·Morgan Gustafsson·Dag Hanstorp·Andreas E. Klinkmueller·Ulric Ljungblad·Ann-Marie Maartensson-Pendrill
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Abstract

The specific mass shift in the electron affinity between ^{35}Cl and ^{37}Cl has been determined by tunable laser photodetachment spectroscopy to be -0.51(14) GHz. The isotope shift was observed as a difference in the onset of the photodetachment process for the two isotopes. In addition, the electron affinity of Cl was found to be 29138.59(22) cm^{-1}, giving a factor of 2 improvement in the accuracy over earlier measurements. Many-body calculations including lowest-order correlation effects demonstrates the sensitivity of the specific mass shift and show that the inclusion of higher-order correlation effects would be necessary for a quantitative description.

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Uldis Berzinsh, Morgan Gustafsson, Dag Hanstorp, Andreas E. Klinkmueller, Ulric Ljungblad, Ann-Marie Maartensson-Pendrill. 1998-04-23. Isotope shift in the electron affinity of chlorine. https://doi.org/10.1103/physreva.51.231

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