Phys. Rev. A 9, 1115 - 1129 (1974)Energy spectra of collisionally produced H- autodetaching states |
J. S. Risley *, A. K. Edwards †, and R. Geballe
Department of Physics, University of Washington, Seattle, Washington 98195
Received 8 October 1973
Several lines, observed between 9 and 30 eV in the energy spectra of electrons ejected in 100-eV to 10-keV collisions of H- with He, Ar, and H2, are attributed to autodetaching states of H-. The energy of the lowest line associated with the (2s2)1S state of H- was found to be 9.59±0.03 eV. Two lines due to Ar- autodetaching states were used to calibrate the energy scale. The separations in energy between the (2s2)1S line of H- and several other lines lying below the n=2 and n=3 levels of hydrogen were measured. The present results agree well with theoretical predictions and with the experimentally observed resonances in the elastic scattering of electrons on atomic hydrogen.
©1974 The American Physical Society
URL: http://link.aps.org/abstract/PRA/v9/p1115
DOI: 10.1103/PhysRevA.9.1115
* Supported in part by a NASA Traineeship.
† Present address: Department of Physics, University of Georgia, Athens, Georgia 30602.
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