Abstract:
The positronium formation cross-sections in the ground and excited n=2 levels have been studied in an -He atom collision in the framework of eikonal approximation. Both the differential and total formation cross-sections have been investigated in the intermediate- and high-energy regime. Present eikonal results are found to differ appreciably from the corresponding first Born values even at very high incident energies. The total cross-section results have been compared with available experiments due to different groups as well as with other existing theoretical results.
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Received: 20 July 1998 / Received in final form: 5 January 1999
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Nath, B., Sinha, C. Positronium formation cross-sections in the ground and excited states ( levels) in an -He atom collision. Eur. Phys. J. D 6, 295–302 (1999). https://doi.org/10.1007/s100530050312
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DOI: https://doi.org/10.1007/s100530050312