Energy and charge distribution of helium atoms reflected from a Cu surface under grazing incidence |
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Authors: | Yu A Fainberg Ya A Teplova N V Novikov |
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Institution: | 1.Skobeltsyn Institute of Nuclear Physics,Moscow State University,Moscow,Russia |
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Abstract: | The energy and charge distributions of helium ions and atoms reflected from a Cu surface at grazing incidence have been measured
at the energies 250 and 300 keV. The dependence of the relative number of helium atoms in the scattered beam on the scattering
angle at incidence angles less than 2° and scattered particle energies below 150 keV has been discovered. It is shown that,
for a theoretical estimation of the charge fractions of particles reflected from the target surface, charge-exchange cross
sections used in calculations must be corrected when solids are considered instead of gases. |
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