Spin-parity combinations and low-lying 2p-4h states in /sup 54/Mn

Journal Article · Fri Aug 01 04:00:00 EDT 1980 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.22.462· OSTI ID:5294860

Pilt, A A; Cameron, J A; Kuehner, J A

The tensor analyzing powers T/sub 20/ of outgoing ..cap alpha.. particles at theta=4/sup 0/ have been measured in the /sup 56/Fe(d,..cap alpha..)/sup 54/Mn reaction at incident energies of 7.5, 8.0, 8.5, 9.0, and 9.5 MeV. The resulting determination of natural or unnatural parity led to the following new unambiguous J/sup ..pi../ assignments: 839 keV, 4/sup +/; 1073 keV, 6/sup +/; 1137 keV, 5/sup +/; 1391 keV, 1/sup +/; 1454 keV, 1/sup +/; 1.51 MeV, 2/sup +/; and 1.87 MeV, 3/sup +/. In addition, natural or unnatural parity assignments were made to several levels above 2 MeV excitation for which no spin information existed prior to this experiment. A measurement of the angular distribution of outgoing ..cap alpha.. particles in an unpolarized (d,..cap alpha..) reaction led to a tentative 0/sup +/ assignment to a state at 1.68 MeV on the basis of decreasing cross section at forward angles. The results are compared to 1p3h+2p4h shell model calculations and we suggest that the 1.51, 1.68, and 1.85 MeV levels are largely 2p-4h states.

• Research Organization: Tandem Accelerator Laboratory, McMaster University, Hamilton, Ontario L8S 4M1, Canada
• OSTI ID: 5294860
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 22:2; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ALPHA PARTICLES
ALPHA SPECTRA
ANALYZING POWER
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BEAMS
BETA DECAY RADIOISOTOPES
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DAYS LIVING RADIOISOTOPES
DEUTERON REACTIONS
DIRECT REACTIONS
DISTRIBUTION
ELECTRON CAPTURE RADIOISOTOPES
ELECTROSTATIC ACCELERATORS
ENERGY LEVELS
ENERGY RANGE
INTERMEDIATE MASS NUCLEI
IRON 56 TARGET
ISOTOPES
MANGANESE 54
MANGANESE ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 01-10
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
ODD-ODD NUCLEI
PARITY
PARTICLE PROPERTIES
PICKUP REACTIONS
POLARIZED BEAMS
RADIOISOTOPES
SHELL MODELS
SPECTRA
SPIN
TARGETS
TRANSFER REACTIONS
VAN DE GRAAFF ACCELERATORS