Phys. Rev. Lett. 76, 4328–4331 (1996)Absolute Electron-Impact Ionization Cross Section Measurements Using a Magneto-Optical TrapReceived 12 February 1996; published in the issue dated 3 June 1996 We present a new method for measuring absolute total electron-impact ionization cross sections. The technique measures fractional loss rates from a magneto-optical trap due to electron-impact ionization. The method requires only relative measurements of the number of target atoms and therefore eliminates a major source of difficulty in previous experiments. We report total ionization cross sections of Rb for electron energies from 50 to 500 eV. © 1996 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.76.4328
DOI:
10.1103/PhysRevLett.76.4328
PACS:
34.50.Fa, 34.80.Dp, 39.10.+j, 52.20.Fs
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