Yields of xenon isotopes in the reactions of protons with energies of 72 and 100 MeV and 1 GeV with Cs, BA and REEs

Details Yields of xenon isotopes in the reactions of protons with energies of 72 and 100 MeV and 1 GeV with Cs, BA and REEs Yields of xenon isotopes in the reactions of protons with energies of 72 and 100 MeV and 1 GeV with Cs, BA and REEs

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988geokh......592s&link_type=abstract

Geokhimiia (ISSN 0016-7525), April 1988, p. 592-596. In Russian.

Physics

Atomic Collisions, Energetic Particles, Proton Energy, Xenon Isotopes, Cosmochemistry, Proton Irradiation

Scientific paper

The yield distributions of Xe isotopes obtained upon bombardment with energetic protons (of 72, 100, 750, and 1000 MeV) of elements whose atomic numbers range between 55 and 75 are examined. It is shown that, in general, upon bombardment by protons in the 72-1000 MeV range, the relative yields of neutron-defective Xe isotopes falls with the increase of the atomic number of the target. The exception to this rule is exhibited only by the X-130 and Xe-132 isotopes, the yields of which increase with increasing values of Z for targets with Z less than 73 at proton energies close to 1 GeV. These results are important for interpretations of cosmic-origin Xe, because they change the conventional concepts concerning the rates of isotopic Xe accumulation from REEs.

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