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

Journal Article · Fri Aug 01 00:00:00 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), Vol. 22:2
• Country of Publication: United States
• Language: English

Related Subjects

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