Highly deformed structures in {sup 135,136}Sm

Journal Article · Tue Dec 01 04:00:00 EST 1998 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.58.3212· OSTI ID:670246

OBrien, N J; Wadsworth, R; Hibbert, I M ^[1]; Archer, D E; Pfohl, J; Riley, M A ^[2]; Fallon, P ^[3]; Joss, D T; Nolan, P J; Paul, E S ^[4]; LaFosse, D R; Sarantites, D G ^[5]; Wyss, R ^[6]

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1. Department of Physics, University of York, Heslington, York, Y01 5DD (United Kingdom)
2. Department of Physics, Florida State University, Tallahassee, Florida 32306 (United States)
3. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
4. Oliver Lodge Laboratory, University of Liverpool, P.O. Box 147, Liverpool L69 7ZE (United Kingdom)
5. Department of Chemistry, Washington State University, St. Louis, Missouri 63130 (United States)
6. Department of Physics I, Royal Institute of Technology, Stockholm, S-104 44 (Sweden)

High-spin states have been populated in the neutron-deficient {sup 135,136}Sm nuclei via the {sup 105}Pd({sup 35}Cl,pxn) reaction at a beam energy of 180 MeV. Transitions within the Sm nuclei were enhanced by using the Microball charged particle array and {gamma}-ray de-excitation was studied using Gammasphere. A new highly deformed band has been observed in the data and assigned to {sup 136}Sm. Comparison of the properties of the new band with Woods-Saxon cranking calculations suggests that it is built upon a {nu}(i{sub 13/2}){sup 2} configuration. The band shows evidence for an interaction at {h_bar}{omega}{approximately}0.7 MeV. This has tentatively been interpreted as resulting from a crossing between the {alpha}=+1/2 signatures of the [532]5/2 and [541]1/2 proton orbitals. The previously known {nu}i{sub 13/2} intruder band in {sup 135}Sm was also observed and extended to higher rotational frequency. Both structures show good agreement with extended total Routhian surface calculations. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 670246
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 6 Vol. 58; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CHLORINE 35 REACTIONS
CRANKING MODEL
DEFORMED NUCLEI
HEAVY ION REACTIONS
HIGH SPIN STATES
MEV RANGE 100-1000
PALLADIUM 105 TARGET
ROTATIONAL STATES
SAMARIUM 135
SAMARIUM 136