"Noble gas mass spectrometry was used to study rare nuclear processes in terrestrial rocks and minerals. An excess of 36Ar was detected in a chlorine-rich rock. The excess 36Ar has been produced in rocks near the earth's surface due to capture of cosmic-ray-produced neutrons on 35Cl. Measurement of 36Ar formed by the 35Cl(n, γ)36Cl(β-)36Ar process makes possible a new method for determining the surface residence time of chlorine-rich minerals
Excess 82Kr and excess 83Kr were detected in selenium-rich ores. The excess 82Kr results from double beta decay of 82Se, and the half-life for this process was determined to be (2.76 ± 0. 88)1020 years. The excess 83Kr results from neutron capture reactions on 82Se. The amounts of excess 83Kr in selenium ores are compared with the amounts of excess 129Xe and excess 131Xe in tellurium ores to show that these two xenon isotopes are the product of neutron capture reactions on tellurium"--Abstract, page iii.
Manuel, O. (Oliver), 1936-
Webb, William H.
M.S. in Chemistry
University of Missouri--Rolla
Journal article titles appearing in thesis/dissertation
- Argon-36 from neutron capture on chlorine in nature
- Double beta decay of selenium-82
vii, 40 pages
© 1972 David Eugene Sinclair, All rights reserved.
Thesis - Open Access
Library of Congress Subject Headings
Argon -- Isotopes -- Spectra
Print OCLC #
Electronic OCLC #
Link to Catalog Recordhttp://laurel.lso.missouri.edu/record=b1066773~S5
Sinclair, David E., "Studies of neutron capture produced rare gas isotopes in rocks and minerals containing chlorine, selenium and tellurium" (1972). Masters Theses. 3537.