The Interaction of 970 MeV Protons with Helium

Details The Interaction of 970 MeV Protons with Helium The Interaction of 970 MeV Protons with Helium

Sep 1960

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1960rspsa.257..316r&link_type=abstract

Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences, Volume 257, Issue 1290, pp. 316-325

Physics

13

Scientific paper

The interaction of 970 MeV protons with helium has been studied with a high-pressure diffusion cloud chamber. From 642 events the total and absorption cross-sections were found to be 116±17 mb and 93±13 mb, respectively. These agree with values obtained by extrapolation of known cross-sections for more complex nuclei, and the results are interpreted in terms of the optical model of the nucleus. The angular distribution for elastic-scattering yields an α-particle radius of 1.8 x 10-13 cm. Quasi-elastic proton-proton and proton-neutron scattering, and more particularly charged meson production, show that the α-particle has some individual particle characteristics. Meson reabsorption appears unimportant.

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