Elsevier

Nuclear Physics A

Volume 302, Issue 2, 19 June 1978, Pages 388-400
Nuclear Physics A

Large angle cross section and analyzing power for proton-4he elastic scattering between 185 and 500 MeV

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Abstract

The differential cross section for the elastic scattering of protons from 4He has been measured for ten proton energies between 185 and 500 MeV in the angular range 144° to 168° in the lab system. The analyzing power has also been measured for seven energies in the same angular range. The differential cross section does not show the marked backward peaking that has been observed at both lower and higher energies. The possible structure in the 180° excitation function suggested for energies around 240 MeV is not observed. The analyzing power is large and negative, and shows strong dependence on both energy and angle.

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    Work supported in part by the National Research Council of Canada and the US National Science Science Foundation.

    1

    Now at the Department of Physics, University of Monitoba,Winnipeg, Manitoba, Canada R3T 2N2.

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