Phys. Rev. Lett. 76, 744–747 (1996)Structural Properties of the Negative Calcium Ion:Binding Energies and Fine-Structure SplittingReceived 25 September 1995; published in the issue dated 29 January 1996 The binding energies of the 4s24p2P ground state in Ca- have been determined by means of state-selective photoionization of Ca atoms produced in s-wave photodetachment to be 24.55±0.10 meV for the J = 1/2 and 19.73±0.10 meV for the J = 3/2 component. The sensitivity of the detection technique applied has also made it possible to disprove previous claims for the observation of a metastable 4s4p24P state in Ca-. © 1996 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.76.744
DOI:
10.1103/PhysRevLett.76.744
PACS:
32.80.Gc
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