Delayed neutron alignment in sup 117 I

Journal Article · Mon Jun 01 04:00:00 EDT 1992 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.45.R2531· OSTI ID:7286884

Paul, E S; Waring, M P; Clark, R M; Forbes, S A; Fossan, D B; Hughes, J R; LaFosse, D R; Liang, Y; Ma, R; Vaska, P; Wadsworth, R ^[1]

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1. Oliver Lodge Laboratory, University of Liverpool, P.O. Box 147, Liverpool L69 3BX (United Kingdom) Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794 (United States) Department of Physics, University of York, Heslington, York YO1 5DD (United Kingdom) Medical Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)

The rotational alignment of {ital h}{sub 11/2} neutrons is considerably delayed ({Delta}{h bar}{omega}{similar to}0.11 MeV) in the {pi}{ital h}{sub 11/2}(550)1/2{sup {minus}} intruder band in {sup 117}I when compared to bands built on normal-parity states. Comparison with cranked shell-model calculations suggests that this effect may indicate a larger quadrupole deformation for the intruder orbital. A strong neutron-proton interaction between the aligning {ital h}{sub 11/2} neutrons and the {ital h}{sub 11/2} proton intruder may also play a role. In addition, noncollective oblate states at {ital I}{sup {pi}}=39/2{sup {minus}},43/2{sup {minus}}, and 45/2{sup {minus}} compete energetically with rotational states of the intruder band which may also perturb the neutron alignment.

• OSTI ID: 7286884
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 45:6; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM 27 REACTIONS
BARYON-BARYON INTERACTIONS
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
COLLECTIVE EXCITATIONS
CRANKING MODEL
DEFORMATION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVAPORATION
EXCITATION
EXCITED STATES
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
HEAVY ION FUSION REACTIONS
HEAVY ION REACTIONS
INTERACTIONS
INTERMEDIATE MASS NUCLEI
IODINE 117
IODINE ISOTOPES
ISOTOPES
MATHEMATICAL MODELS
MINUTES LIVING RADIOISOTOPES
MOLYBDENUM 94 TARGET
NEUTRONS
NUCLEAR DEFORMATION
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
ODD-EVEN NUCLEI
PARTICLE INTERACTIONS
PHASE TRANSFORMATIONS
PROTON-NEUTRON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
PROTONS
RADIOISOTOPES
ROTATIONAL STATES
SHELL MODELS
TARGETS