Particle-hole stretched states excited in the /sup 26/Mg(p,n)/sup 26/Al reaction at 134 MeV

Journal Article · Thu Sep 01 04:00:00 EDT 1988 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.38.1099· OSTI ID:6951716

Lebo, C; Anderson, B D; Chittrakarn, T; Baldwin, A R; Madey, R; Watson, J W; Foster, C C

Strong excitation of both (..pi..d/sub 5/2/,..nu..d/sub 5/2//sup -1/) 5/sup +/, 0 (h/2..pi..)..omega.. and (..pi..f/sub 7/2/,..nu..d/sub 5/2//sup -1/) 6/sup -/, 1 (h/2..pi..)..omega.. stretched-state strength is observed in the /sup 26/Mg(p,n)/sup 26/Al reaction at 134.4 MeV. The T = 0, 5/sup +/ strength is observed to be predominantly in the ground state which has 56% of the strength predicted by a distorted-wave impulse approximation calculation that assumes the extreme single-particle-hole model. Another 17% of this strength is observed in a 5/sup +/ state at 3.4 MeV. The 6/sup -/ strength is split into three isospin components: 61% of the extreme single-particle-hole model T = 0, 6/sup -/ strength is observed in three states between 6.9 and 11.0 MeV; 58% of the predicted T = 1 strength is observed in nine states between 9.3 and 16.5 MeV; 27% of the predicted T = 2 strength is observed in a single state at 18.2 MeV. The observed 6/sup -/-state excitation energies are in general agreement with the T = 0 and 1, 6/sup -/ states observed in the /sup 25/Mg(..cap alpha..,t)/sup 26/Al reaction and with the analog T = 1 and 2, 6/sup -/ states in /sup 26/Mg observed in inelastic electron and proton scattering. The total observed 5/sup +/ strength and its distribution are in good agreement with distorted-wave impulse approximation calculations that use full S-D shell-model wave functions.

• Research Organization: Department of Physics, Kent State University, Kent, Ohio 44242
• OSTI ID: 6951716
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 38:3; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651420* -- Nuclear Properties & Reactions
A=20-38
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM 26
ALUMINIUM ISOTOPES
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BARYON REACTIONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGE-EXCHANGE REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DISTORTED WAVE THEORY
DISTRIBUTION
ENERGY LEVELS
ENERGY RANGE
FUNCTIONS
HADRON REACTIONS
HIGH SPIN STATES
IMPULSE APPROXIMATION
ISOSPIN
ISOTOPES
LIGHT NUCLEI
MAGNESIUM 26 TARGET
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
NEUTRON SPECTRA
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-ODD NUCLEI
PARITY
PARTICLE MODELS
PARTICLE PROPERTIES
PARTICLE-HOLE MODEL
PROTON REACTIONS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SHELL MODELS
SINGLE-PARTICLE MODEL
SPECTRA
SPIN
TARGETS
WAVE FUNCTIONS
YEARS LIVING RADIOISOTOPES