Dependence of the neutron and gamma-ray emission of Mercury on its surface composition and temperature |
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| Authors: | N A Gun’ko A S Kozyrev I G Mitrofanov A I Tsygan |
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| Institution: | 1.A.F. Ioffe Physical Technical Institute,Russian Academy of Sciences,St. Petersburg,Russia;2.Space Research Institute,Russian Academy of Sciences,Moscow,Russia |
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| Abstract: | Results of computations of the energy spectrum of neutrons radiated by the planet Mercury, generated by the action of cosmic
rays, are presented. The dependence of the neutron radiation on both the temperature and composition of the subsurface layers
of the planetary regolith are investigated. The fluxes of γ-rays in lines of aluminum (27Al, 7.7240 MeV), silicon (28Si, 3.5390 MeV), calcium (40Ca, 1.9427 MeV), and iron (56Fe, 7.6312 and 7.6456 MeV) generated during neutron capture by these nuclei are also calculated. The intensity of the radiation
in these lines depends on both the composition and temperature of the surface. This must be taken into account when interpreting
measurements of γ-ray radiation from nuclear lines produced in neutron capture reactions on the substance of Mercury. |
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