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NUCLEAR REACTIONS INDUCED BY THE NITROGEN BOMBARDMENT OF SULFUR

Journal Article · · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
Thick targets of ZnS, containing natural sulfur, were bombarded with 28- Mev nitrogen ions in the ORNL 63-in. cyclotron. The compound nucleus resulting from bombardment of S/sup 32/ with 28-Mev nitrogen ions in V/sup 46/, with an excitation energy of 33.3 Mev. The following nuclear reactions were studied: (1) S/sup 32/(N/sup 14/,p) Ti/sup 45/,; (2) S/sup 32/(N/sup 14/, 2p) Sc/sup 44/;(3) S/ sup 32/(N/sup 14/, 2p)Sc/sup 44m/; (4) S/sup 32/(N/sup 14/,2pn)SC/sup 43/;(5) S/ sup 32/(N/sup 14,2 alpha )K/sup 38/; an d (6) S/sup 32/(N/sup 14,N/sup 13/)S/sup 33/. The yields as a function of incident energy for these reactions were differentiated to obtain excitation functions. The cross sections for (1), (2 and 3), and (5) are compared with calculations based on the statistical theory of compound nucleus decay. Two values of the level density parameter, a, were employed, first considering and then ignoring de-excitation of a nucleus by gamma- ray emission. The value a = A/10.5 fits the p and 2p emission cross sections when gamma emission is considered. The excitation function for reaction (6) agrees well with the systematics of previously studied nitrogen-induced transfer reactions. (auth)
Research Organization:
Oak Ridge National Lab., Tenn.; Univ. of Florida, Gainesville
NSA Number:
NSA-13-010487
OSTI ID:
4270382
Journal Information:
Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 113; ISSN PHRVA
Country of Publication:
Country unknown/Code not available
Language:
English