/sup 27/Al(p,. gamma. )/sup 28/Si and /sup 27/Al(/sup 3/He,d)/sup 28/Si to the stretched 11. 58-MeV (6/sup -/,0) and 14. 36-MeV (6/sup -/,1) levels

Technical Report · Thu Jan 01 04:00:00 EST 1981

OSTI ID:6555806

Snover, K A; Feldman, G; Hindi, M M; Kuhlmann, E; Harakeh, M N; Sasao, M; Noumachi, M; Fujita, Y; Fujiwara, M; Hosono, K

We have studied the E/sub x/ = 14.36 MeV 6/sup -/,T = 1 resonance in the /sup 27/Al(p,..gamma..) reaction with the result that GAMMA/sub Po/ = GAMMA = 4.0 +- 0.2 keV, from which we infer a (d/sub 5/2//sup -1/,f/sub 7/2/) parentage delta/sub 1//sup 2/ approx. = 0.7. We also obtain B(M1) = 2.8 +- 0.4 nm/sup 2/ or 0.19 +- 0.03 of the pure single particle (d/sub 5/2//sup -1/,f/sub 7/2/) value for the 6/sup -/,1 ..-->.. 6/sup -/,0 M1 ..gamma..-decay. /sup 27/Al (/sup 3/He,d) results for stripping to the 6/sup -/,1 and the 6/sup -/,0 (11.58 MeV) levels indicate S/sub o/(p)/S/sub 1/(p) = 1.1 +- 0.1 and hence that the 6/sup -/,0 level has a (d/sub 5/2//sup -1/,f/sub 7/2/) parentage comparable to the 6/sup -/,1 level, contrary to inferences based on inelastic proton and pion scattering data. We discuss the hindrance of the M1 decay and the previously measured inelastic electron, proton and pion excitation strengths relative to the expectations of a 1 particle-1 hole model.

• Research Organization: Washington Univ., Seattle (USA). Dept. of Physics; Rijksuniversiteit Groningen (Netherlands). Kernfysisch Versneller Inst.; Osaka Univ., Toyonaka (Japan). Dept. of Physics; Osaka Univ., Suita (Japan). Research Center for Nuclear Physics
• DOE Contract Number: AC06-81ER40048
• OSTI ID: 6555806
• Report Number(s): DOE/ER/40048-27-L2; ON: DE83004106
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM 27 TARGET
BARYON REACTIONS
CAPTURE
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DEUTERONS
DIFFERENTIAL CROSS SECTIONS
DIRECT REACTIONS
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXCITATION FUNCTIONS
EXPERIMENTAL DATA
FUNCTIONS
GAMMA RADIATION
HADRON REACTIONS
HELIUM 3 REACTIONS
INFORMATION
IONIZING RADIATIONS
ISOTOPES
LEVEL WIDTHS
LIGHT NUCLEI
M1-TRANSITIONS
MULTIPOLE TRANSITIONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUMERICAL DATA
PROTON REACTIONS
RADIATIONS
RESONANCE
SILICON 28
SILICON ISOTOPES
STABLE ISOTOPES
STRIPPING
TARGETS
TRANSFER REACTIONS