Production of 7Be from proton bombardment of light elements

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Abstract

The formation cross sections of 7Be from proton bombardment of natural Be, B, N and O have been measured as a function of Ep up to Ep = 52 MeV.

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    For the 9Be(p,x)7Be reaction a confirmation of data obtained 60 years ago by Cohen and Handley (1954) in the same energy region (threshold to 25 MeV) was found and the excitation function allows to distinguish the importance of triton emission at low energy. At higher energies our data are in good agreement with the nearly constant cross section for the 9Be(p,p2n)7Be reaction found by Inoue and Tanaka (1976) and Aleksandrov et al. (1990). We can conclude that the combined results of our three irradiations give a physically consistent excitation function for proton production of 7Be on 9Be targets from threshold up to 65 MeV.

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    For this reason, a high rate of production of 7Be isotopes is expected. Inoue et al. [23] reported the formation of 7Be isotopes during proton bombardment of natural boron nuclei, with a 10 mb cross section for the reaction natB(p,x)7Be in conditions of 40 MeV proton impinging beam. In the aforementioned reaction, x represents the various sub-products of the interaction of the protons with the two different isotopes present in natural boron, 10B (19.8 at.

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    1982, Nuclear Instruments and Methods In Physics Research
  • Energy levels of light nuclei A = 11-12

    1980, Nuclear Physics, Section A
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