Band termination in sup 121 I

Journal Article · Thu Aug 01 04:00:00 EDT 1991 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.44.R578· OSTI ID:5253318

Liang, Y; Fossan, D B; Hughes, J R; LaFosse, D R; Lauritsen, T; Ma, R; Paul, E S; Vaska, P; Waring, M P; Xu, N ^[1]; Wyss, R A ^[2]

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1. Department of Physics, State University of New York at Stony Brook, New York (USA)
2. The Manne Siegbahn Institute of Physics, Frescativaegen 24, S-104 05 Stockholm 50 (Sweden)

The rotational band in {sup 121}I that initiates on the {pi}{ital h}{sub 11/2}(550)1/2{sup {minus}} orbital was observed to terminate via coincidence {gamma}-ray studies following the {sup 114}Cd({sup 11}B,4{ital n}) reaction. The band termination occurred at {ital I}{sup {pi}}=39/2{sup {minus}}. Total-Routhian surface calculations reveal an yrast noncollective oblate state ({gamma}=+60{degree}) at {h bar}{omega}=0.36 MeV which consists of an aligned {pi}{ital h}{sub 11/2}({pi}{ital g}{sub 7/2}){sup 2}({nu}{ital hh}{sub 11/2}){sup 2} configuration with {ital I}{sup {pi}}=39/2{sup {minus}}; this shape change from collective prolate to noncollective oblate provides an explanation for the observed band termination.

• OSTI ID: 5253318
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 44:2; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
COINCIDENCE METHODS
COUNTING TECHNIQUES
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
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GAMMA SPECTROSCOPY
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
IODINE 121
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ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MICROSEC LIVING RADIOISOTOPES
NUCLEI
ODD-EVEN NUCL
RADIOISOTOPES
ROTATIONAL STATES
SPECTROSCOPY