Differential cross sections in antiproton- and proton-helium collisions

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Cross sections are presented for the first time for antiproton-helium collisions at an energy of 945 keV differential in longitudinal electron and recoil-ion momenta. The longitudinal momentum distributions for antiproton impact are compared with 1 MeV proton-helium collision. The electron and the r...

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Detalles Bibliográficos
Autores principales: Khayyat, Kh., Weber, T., Dörner, R., Achler, M., Mergel, V., Spielberger, L., Jagutzki, O., Meyer, U., Ullrich, J., Moshammer, R., Schmitt, W., Knudsen, H., Mikkelsen, U., Aggerholm, P., Uggerhoej, E., Moeller, S.P., Rodríguez, V.D., O'Rourke, S.F.C., Olson, R.E., Fainstein, P.D., McGuire, J.H., Schmidt-Böcking, H.
Formato: JOUR
Materias:
Atoms
Electrons
Helium
Ions
Protons
Antiprotons
Atomic physics
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09534075_v32_n4_pL73_Khayyat
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:Cross sections are presented for the first time for antiproton-helium collisions at an energy of 945 keV differential in longitudinal electron and recoil-ion momenta. The longitudinal momentum distributions for antiproton impact are compared with 1 MeV proton-helium collision. The electron and the recoil-ion momentum distributions for antiprotons agree with those for protons to within 10%. We did not observe a difference between antiproton impact and proton impact. A comparison with CDW and CTMC theories is presented.

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