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Neutralization and Detachment in H+--H- Collisions |
| LIU Ling;WANG Jian-Guo |
| The Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088 |
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| Cite this article: |
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LIU Ling, WANG Jian-Guo 2007 Chin. Phys. Lett. 24 3115-3118 |
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Abstract The cross sections for neutralization and detachment in H+--H- collisions in the energy range from 1.0 to 100keV/u are calculated using the two-centre atomic orbital close-coupling (TC-AOCC) method. The results are compared with the available experimental and theoretical data. It is found that the
neutralization cross section agrees well with the experimental data by Schon et al. [J. Phys. B 20 (1987) L759] and Melchert et al., [J. Phys. B 32 (1999) L139] especially at low energies. However, for the detachment process, our calculated cross section lies between the experimental data by Melchert et al. and by Peart et al. [J. Phys. B 9 (1976) 3047] for the energy below 15keV/u. Above this energy, our result is smaller than the two experimental data. It is worth pointing out that there exists a large difference between these two experimental data and it is difficult to judge which data is more accurate.
Therefore, a high-precision measurement for detachment cross sections is expected to resolve this discrepancy and to test the theoretical calculations.
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| Keywords:
34.70.+e
34.50.Fa
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Received: 07 June 2007
Published: 23 October 2007
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| PACS: |
34.70.+e
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(Charge transfer)
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34.50.Fa
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(Electronic excitation and ionization of atoms (including beam-foil excitation and ionization))
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