Experimental Study of the O^(17)(p,α)N^(14) Reaction and a Calculation of the Rate of this Reaction in the CNO Cycle in Stars
- Creators
- Brown, Ronald E.
Abstract
An experimental measurement of the absolute cross section for the O^(17)(p,α)N^(14) reaction has been carried out in the energy range from 490- to 1580-kev proton bombarding energy at a laboratory angle of 150°. Resonances were observed at proton energies of 518, 672, 747, 825, 927, 1096, 1101, 1247, 1274, and 1335 kev. Other level parameters were assigned where possible. The 747-kev resonance corresponds to a level in F18 at 6302-kev excitation which does not appear to have been previously reported. A calculation of the ratio O^(17)/O^(16) formed at equilibrium at various temperatures in the CNO cycle in stars is made, and it is concluded that the terrestrial material which has been processed in the CNO cycle underwent this processing at a temperature of about 17×10^6 °K.
Additional Information
© 1962 American Physical Society. Received 7 August 1961; published in the issue dated January 1962. Supported in part by the joint program of the Office of Naval Research and the U.S. Atomic Energy Commission. This work is based on a thesis submitted to the California Institute of Technology in partial fulfillment of the requirements for the degree of Doctor of Philosophy. National Science Foundation Predoctoral Fellow. The author wishes to express his gratitude and thanks to the entire staff and personnel of the Kellogg Radiation Laboratory for their kind assistance during the course of this work. He is especially indebted to Professor William A. Fowler who suggested the problem and guided the work to its completion. Special thanks are also expressed to Barbara A. Zimmerman for her help with many of the computations.Attached Files
Published - BROpr62.pdf
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Additional details
- Eprint ID
- 33228
- Resolver ID
- CaltechAUTHORS:20120815-142237578
- Office of Naval Research (ONR)
- Atomic Energy Commission
- NSF Predoctoral Fellowship
- Created
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2012-08-16Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field