Nuclear structure of [sup 178]Lu

Journal Article · Fri Jan 01 00:00:00 EST 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.47.131· OSTI ID:6898853

Burke, D G; Sood, P C; Garrett, P E; Qu, T ^[1]; Sheline, R K ^[2]; Hoff, R W ^[3]

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1. Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, L8S 4K1 (Canada)
2. Departments of Chemistry and Physics, Florida State University, Tallahassee, Florida 32306 (United States)
3. Nuclear Chemistry Division, Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

The [sup 179]Hf([ital t],[alpha])[sup 178]Lu reaction has been studied using beams of 17 MeV tritons from the McMaster University tandem Van de Graaff accelerator. Reaction products were analyzed with a magnetic spectrograph, and the resolution achieved for the alpha spectra was [similar to]20 keV (FWHM). Two-quasiparticle states in [sup 178]Lu involving the 9/2[sup +][624] target neutron coupled with the 7/2[sup +][404], 9/2[sup [minus]][514], and 1/2[sup +][411] proton orbitals were identified. The difference in ground-state ([ital t],[alpha]) [ital Q] values for [sup 178]Hf and [sup 179]Hf components of the target, combined with the known masses of [sup 177]Lu, [sup 178]Hf, and [sup 179]Hf, yields an improved value of [minus]50 351[plus minus]5 keV for the mass excess of [sup 178]Lu. This result, combined with the two-quasiparticle assignments from the present work, has resolved the long-standing puzzle concerning the character and excitation energy of the well-known 23 min high-spin beta-decaying isomer in [sup 178]Lu.

• OSTI ID: 6898853
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Vol. 47:1; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
HAFNIUM 179 TARGET
TRITON REACTIONS
LUTETIUM 178
NUCLEAR STRUCTURE
ALPHA PARTICLES
COLLECTIVE EXCITATIONS
ENERGY LEVELS
HIGH SPIN STATES
MEV RANGE 10-100
TRANSFER REACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
DIRECT REACTIONS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
LUTETIUM ISOTOPES
MEV RANGE
MINUTES LIVING RADIOISOTOPES
NUCLEAR REACTIONS
NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
TARGETS
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