Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

HIGH-ENERGY GAMMA RAYS AND LOW-ENERGY PROTONS AND DEUTERONS FROM C$sup 12$ + p FOR Ep = 14-20 Mev

Journal Article · · Physical Review (U.S.) Superseded in part by Phys.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
;

The 90 deg yield of gamma rays from proton bombardment of C/sup 12/ was studied for proton energies between 14 and 20 Mev. Gamma rays are obseved corresponding to the ground-state decay of the C/sup 12/ 4.43-, 12.7-, and 15.1- Mev levels and from the C/sup 12/(p, gamma /sub 0/)N/sup 13/ reaction. Three resonances are observed in the yield of the 15.1-Mev gamma ray. These resonances correspond to N/sup 13/ levels at 18.1, 18.65, and 19.8 Mev. The N/sup 13/ 18.1- Mev level has a width of 330 plus or minus 100 kev in the center-of-mass system. The other two levels have widths less than 200 kev. The yields of the 4.43- and 12.7-Mev gamma rays reveal littie or no structure. The excitation function of the C/sup 12/(p, gamma /sub 0/)N/sup 13/ reaction also shows little structure. Angular distributions and absolute integrated cross sections for the C/sup 12/ (p,p')C/sup 12/ reaction are given for the C/sup 12/ 12.7-Mev level with E/sub p/ = 17.5, 19.5, and 20 Mev and for the C/sup 12/ 15.1-Mev level with E/sub p/ = 19.5 Mev. The latter is approximately symmetrical about 90 deg which suggests possible contribution from the compound nucleus reaction mechanism. Comparison of the cross sections for gamma // GAMMA = 0.027 plus or minus 0.007 for the C/sup 12/ 12.7-Mev state and 1.15 plus or minus 0.3 for the C/sup 12/ 15.1-Mev state. The yield of the C/sup 12/(p,d)C/sup 11/ reaction was measured by the stacked foil technique from threshold (E/sub p/ = 17.85 Mev) to 19.8 Mev. There is no evidence for structure. Angular distributions are given for the C/sub 12/ (p,d)C/sup 11/ reaction for E/sub p/ = vious work on the B/sup 11/(d,n)C/sup 12/ reaction and it is concluded that the contribution of the compound nucleus reaction mechanism to either reaction is most likely small for the bombarding energies in question. (auth)

Research Organization:
Princeton Univ., N.J.
NSA Number:
NSA-17-000870
OSTI ID:
4779086
Report Number(s):
PUC-1962-82; 0031-899X
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Physical Review (U.S.) Superseded in part by Phys.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: 128; ISSN PHRVA
Country of Publication:
Country unknown/Code not available
Language:
English

Similar Records

STUDY OF SOME LEVELS OF C$sup 12$ USING THE B$sup 10$ (He$sup 3$,p)C$sup 12$ REACTIONS
Journal Article · Fri May 15 00:00:00 EDT 1959 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D · OSTI ID:4217887
STATES IN O$sup 15$ AND N$sup 14$ FROM REACTIONS INDUCED BY He$sup 3$ ON C$sup 12$ AND PROTONS ON N$sup 14$ AND N$sup 13$ AND C$sup 13$ FROM B$sup 10$(He$sup 3$,P$gamma$$sub 15$.$sub 1$)C$sup 12$* AND B$sup 11$(d,n$gamma$$sub 15$.$sub 1$) C$sup 12$*
Thesis/Dissertation · Mon Dec 31 23:00:00 EST 1962 · OSTI ID:4003017
9.0-Mev GAMMA-EMITTING LEVEL IN C$sup 1$$sup 2$
Journal Article · Thu Sep 15 00:00:00 EDT 1960 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D · OSTI ID:4139487

Related Subjects

ACTIVATION
ANGULAR DISTRIBUTION
BORON 11
CARBON 11
CARBON 12
CROSS SECTIONS
DECAY
DEUTERONS
FOILS
GAMMA RADIATION
IRRADIATION
NEUTRONS
NITROGEN 13
NUCLEAR REACTIONS
PHYSICS
PROTONS
RESONANCE