3D lattice calculation for ionization in intermediate energy antiproton-hydrogen collisions
- Oak Ridge National Lab., TN (United States)
The authors present results from a study of the behavior of ionization in intermediate-energy collisions of antiprotons with atomic hydrogen by direct solution of the time-dependent Schroedinger equation represented on a three-dimensional numerical lattice. Total cross sections are computed over the collision energy range of 0.2 to 500 keV from knowledge of the asymptotic state probabilities as a function of impact parameter. The computed ionization cross sections are in good agreement with results from recent experiments conducted at CERN`s LEAR facility. In the energy range from 0.2 to 30 keV, for which measurements are not available, the authors` calculations are in qualitative agreement with other results based on classical-trajectory and coupled-channel methods, confirming the predicted significant difference from the analog proton-impact ionization process.
- DOE Contract Number:
- AC05-96OR22464
- OSTI ID:
- 394320
- Report Number(s):
- CONF-9605105--; CNN: Grant PHY-9122199
- Journal Information:
- Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 41; ISSN BAPSA6; ISSN 0003-0503
- Country of Publication:
- United States
- Language:
- English
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