Masters Theses

Abstract

"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.

Advisor(s)

Manuel, O. (Oliver), 1936-

Committee Member(s)

Bolter, Ernst
Webb, William H.

Department(s)

Chemistry

Degree Name

M.S. in Chemistry

Publisher

University of Missouri--Rolla

Publication Date

1972

Journal article titles appearing in thesis/dissertation

  • Argon-36 from neutron capture on chlorine in nature
  • Double beta decay of selenium-82

Pagination

vii, 40 pages

Note about bibliography

Includes bibliographical references.

Rights

© 1972 David Eugene Sinclair, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Argon -- Isotopes -- Spectra
Gases, Rare

Thesis Number

T 2829

Print OCLC #

6027660

Electronic OCLC #

904963319

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