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Population of high-spin states in $sup 23$Na through the $sup 11$B($sup 16$O,$alpha$) reaction

Journal Article · · Phys. Rev., C, v. 12, no. 4, pp. 1247-1259
OSTI ID:4188927
; ; ; ; ; ;
States in $sup 23$Na were populated with the $sup 11$B($sup 16$O, $alpha$) reaction. Energy-averaged differential cross sections were measured in the energy range E)=16.9--18.5 MeV for 29 excited states in $sup 23$Na from 0 to 15 MeV of excitation, and for the laboratory angles 7, 15, 25, and 150 degrees. Single energy differential cross sections were measured for laboratory angles of 40, 55, and 70 degrees at a bombarding energy of 43.2 MeV. The experimental angular distributions were compared with Hauser-Feshbach calculations, and good agreement was found for the states of known spin values in $sup 23$Na. Candidates for high-spin states in $sup 23$Na were selected for the ground-state rotational band, and for the K=1/2$sup +$ and K=1/2$sup -$ bands. The reliability of using Hauser-Feshbach calculations for spin assignments is discussed, and a comparison of the suggested excitation energies for high-spin states with shell-model calculations is presented.
Research Organization:
Instituto de Fisica, Universidad de Mexico, Mexico 20 D. F., Mexico
NSA Number:
NSA-33-004365
OSTI ID:
4188927
Journal Information:
Phys. Rev., C, v. 12, no. 4, pp. 1247-1259, Journal Name: Phys. Rev., C, v. 12, no. 4, pp. 1247-1259; ISSN PRVCA
Country of Publication:
United States
Language:
English

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Related Subjects

642203*
ALPHA PARTICLES-- ANGULAR DISTRIBUTION-- BORON 11-- COMPOUND-NUCLEUS REACTIONS-- DIFFERENTIAL CROSS SECTIONS-- ENERGY DEPENDENCE-- HAUSER-FESHBACH THEORY-- MEV RANGE 10-100-- OXYGEN 16 REACTIONS
ENERGY LEVELS-- HAUSER-FESHBACH THEORY-- NUCLEI-- RELIABILITY-- SPIN
HIGH SPIN STATES-- ROTATIONAL STATES-- SHELL MODELS-- SPIN
N68351 --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
6 <= A <= 19--Nuclear Reactions & Scattering
N68431* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
20 <= A <= 38--Energy Levels & Transitions