Oblate to prolate shape hindrance in [sup 121]I

Journal Article · Thu Mar 31 23:00:00 EST 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.49.1878· OSTI ID:5122049

Waring, M P; Fossan, D B; LaFosse, D R; Schnare, H; Vaska, P ^[1]; Kistner, O C ^[2]

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1. Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794 (United States)
2. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)

Lifetime measurements of levels in [sup 121]I, populated via the [sup 11]B+[sup 114]Cd reaction at 51 MeV, have been undertaken using the recoil-distance (plunger) method. Transitions from the noncollective oblate ([gamma]=+60[degree]) state associated with band termination and from the collective oblate ([gamma]=[minus]60[degree]) band head to prolate states have been observed to be significantly hindered; mean lifetimes of [tau]=(379[plus minus]32) ps for the 39/2[sup [minus]] state at 5433 keV and [tau]=(83[plus minus]17) ps for the 11/2[sup [minus]] state at 1327 keV, respectively, have been measured. In addition, a mean lifetime of [tau]=(273[plus minus]10) ps was determined for the 11/2[sup [minus]] state at 811 keV.

• OSTI ID: 5122049
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 49:4; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663220 -- Electromagnetic Transitions-- (1992-)
663560 -- Nuclear Mass Ranges-- A=90-149-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BORON 11 REACTIONS
CADMIUM 114 TARGET
CHARGED-PARTICLE REACTIONS
COLLECTIVE EXCITATIONS
DEFORMATION
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
HEAVY ION REACTIONS
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
IODINE 121
IODINE ISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIFETIME
MEV RANGE
MEV RANGE 100-1000
MICROSEC LIVING RADIOISOTOPES
NUCLEAR DEFORMATION
NUCLEAR REACTIONS
NUCLEI
ODD-EVEN NUCL
RADIOISOTOPES
TARGETS