Citation
Leich, Douglas Albert (1974) Applications of a Nuclear Technique for Depth-Sensitive Hydrogen Analysis: Trapped H in Lunar Samples and the Hydration of Terrestrial Obsidian. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/BVB9-FJ36. https://resolver.caltech.edu/CaltechTHESIS:11172015-101124496
Abstract
The resonant nuclear reaction 19F(p,αy)16O has been used to perform depth-sensitive analyses for both fluorine and hydrogen in solid samples. The resonance at 0.83 MeV (center-of-mass) in this reaction has been applied to the measurement of the distribution of trapped solar protons in lunar samples to depths of ~1/2µm. These results are interpreted in terms of a redistribution of the implanted H which has been influenced by heavy radiation damage in the surface region. Fluorine determinations have been performed in a 1-µm surface layer on lunar and meteoritic samples using the same 19F(p,αy)16O resonance. The measurement of H depth distributions has also been used to study the hydration of terrestrial obsidian, a phenomenon of considerable archaeological interest as a means of dating obsidian artifacts. Additional applications of this type of technique are also discussed.
Item Type: | Thesis (Dissertation (Ph.D.)) | ||||||||
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Subject Keywords: | (Physics) | ||||||||
Degree Grantor: | California Institute of Technology | ||||||||
Division: | Physics, Mathematics and Astronomy | ||||||||
Major Option: | Physics | ||||||||
Thesis Availability: | Public (worldwide access) | ||||||||
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Defense Date: | 20 November 1973 | ||||||||
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Record Number: | CaltechTHESIS:11172015-101124496 | ||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechTHESIS:11172015-101124496 | ||||||||
DOI: | 10.7907/BVB9-FJ36 | ||||||||
Default Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||
ID Code: | 9281 | ||||||||
Collection: | CaltechTHESIS | ||||||||
Deposited By: | Dan Anguka | ||||||||
Deposited On: | 17 Nov 2015 21:08 | ||||||||
Last Modified: | 29 Jul 2024 22:54 |
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