Nuclear structure of /sup 153/Pm studied with the (t,. cap alpha. ) reaction

Journal Article · Tue Aug 01 04:00:00 EDT 1978 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.18.693· OSTI ID:6669089

Burke, D G; Lovhoiden, G; Flynn, E R; Sunier, J W

The /sup 154/SM(t,..cap alpha..) /sup 153/Pm reaction has been studied using a 17 MeV beam of polarized tritons from the tandem Van der Graaff accelerator at the Los Alamos Scientific Laboratory. The alpha spectra were recorded using a quadrupole-dipole-dipole-dipole magnetic spectrometer with a position-sensitive helical-cathode detector on the focal plane. Spectra were obtained to excitation energies > 2 MeV with a resolution of approx. 17 keV. It was possible to assign spins and parities to many of the levels by comparing the measured angular distributions of cross sections and analyzing powers with distorted-wave Born approximation predictions. The results are interpreted in terms of the Nilsson model with pairing and Coriolis mixing effects included. The 5/2/sup -/(532), 5/2/sup +/(413), 3/2/sup +/(411), and 1/2/sup +/(420) bands have been observed, as well as the 3/2/sup -/(541) and 3/2/sup +/(422) orbitals, which appear to be strongly Coriolis mixed with the 1/2/sup -/(550) and 1/2/sup +/(431) states, respectively. The results of these experiments confirm some of the assignments from a recent (d,/sup 3/He) study and show that others were incorrect. Spectroscopic factors for the strongest transitions are in good agreement with expectations based on the model. The ground state Q value for the /sup 154/Sm(t,..cap alpha..)/sup 153/Pm reaction was measured to be 10.748 +- 0.020 MeV.

• Research Organization: Tandem Accelerator Laboratory McMaster University, Hamilton, Ontario, Canada L8S 4K1
• OSTI ID: 6669089
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 18:2; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA PARTICLES
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BEAMS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BORN APPROXIMATION
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIRECT REACTIONS
DISTRIBUTION
DWBA
ENERGY
ENERGY LEVELS
ENERGY RANGE
INTERMEDIATE MASS NUCLEI
ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
MINUTES LIVING RADIOISOTOPES
NILSSON-MOTTELSON MODEL
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEAR STRUCTURE
NUCLEI
ODD-EVEN NUCLEI
PARITY
PARTICLE PROPERTIES
PICKUP REACTIONS
POLARIZED BEAMS
PROMETHIUM 153
PROMETHIUM ISOTOPES
Q-VALUE
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SAMARIUM 154 TARGET
SPECTROSCOPIC FACTORS
SPIN
TARGETS
TRANSFER REACTIONS
TRITON REACTIONS