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RADIATIVE CAPTURE OF ALPHA PARTICLES TO STATES OF O$sup 18$ AND F$sup 1$$sup 8$

Journal Article · · Physical Review (U.S.) Superseded in part by Phys.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 radiative capture of alpha particles in N/sup 14/ and C/sup 14/ has been studied for bombarding energies between 1.3 and 3.0 Mev. Four narrow resonances were observed in the reaction N/sup 14/( alpha / gamma )F/sup 18/, corresponding to levels in F/sup 18/ at 5.60, 5.67, 6.24, and 6.65 Mev. Two narrow resonances were observed in the reaction C/sup 14/( alpha , gamma )O/sup 18/, corresponding to levels in O/sup 18/ at 7.63 and 8.05 Mev. These two are 1/ sup -/ states. The decay schemes of some of these reacmodes in thermal neutron fission was calculated from a revised semiempirical atomic mass formula, and pairing energies were subtracted to give the effective energy releases. It was found that predictions of flssion yields bore little resemblance to the yields determined experimentally. The yields were sharply peaked at a mass ratio of 1.34, and there was only a very shallow valley. (W.D.M.)
Research Organization:
Univ. of Wisconsin, Madison
NSA Number:
NSA-12-014282
OSTI ID:
4318859
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Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 110; ISSN PHRVA
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

ALPHA BEAMS
ALPHA PARTICLES
CAPTURE
CARBON 14
DECAY
ENERGY LEVELS
ENERGY RANGE
FLUORINE 18
GAMMA RADIATION
IRRADIATION
LEVEL WIDTHS
LIFETIME
MEASURED VALUES
NITROGEN 14
NUCLEAR REACTIONS
OXYGEN 18
PHYSICS
RESONANCE
WIDTH