Double excitation of He and H{sup {minus}} by fast proton and anti-proton impact
- University of Electro-Communications, Chofu, Tokyo (Japan)
- Institute for Molecular Science, Okazaki (Japan)
- Argonne National Lab., IL (United States)
Theoretical investigation has been made on double excitation processes of He and H{sup {minus}} by fast proton and anti-proton impact in the MeV/u-energy region. The cross sections are calculated by use of both the close-coupling and the perturbation expansion methods, and the wave functions of target atoms are generated based on the hyperspherical coordinate method. The excitation to the 2p{sup 2} {sup 1}D{sup e} state of H{sup {minus}} by anti-proton impact is dominant by about three times in comparison with that by proton impact at the incident energy of 0.1 MeV/u. The spectral shape of an ejected electron from the 2s2p {sup 1}p{sup o} state of H{sup {minus}} at the incident energy of 1.5 MeV/u is consistent with the line profile of the H{sup {minus}} photodetachment observed by Bryant et al.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 10110228
- Report Number(s):
- ANL/ER/PP-77881; ON: DE94004581; TRN: 94:001512
- Resource Relation:
- Other Information: PBD: [1993]
- Country of Publication:
- United States
- Language:
- English
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