Neutron-Rich Nuclei Beyond {sup 132}Sn: Spherical Shapes and Octupole Correlations

Journal Article · Fri Apr 30 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3431475· OSTI ID:21367220

Shaohua, Liu; Hamilton, Joseph H; Ramayya, Akunuri V; Goodin, Christopher T; Hwang, Jae-Kwang ^[1]; Yixiao, Luo ^[1]; Rasmussen, John O ^[2]; Covello, Aldo ^[3]; Gargano, Angel ^[4]; Stone, Nick J ^[5]; Daniel, Andrey V ^[1]; Ter-Akopian, Gurgen M; Oganessian, Yuri Ts ^[6]; Shengjiang, Zhu ^[7]

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1. Department of Physics and Astronomy, Vanderbilt University, Nashville, TN (United States)
2. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
3. Dipartimento di Scienze Fisiche, Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Napoli (Italy)
4. Istituto Nazionale di Fisica Nucleare, Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Napoli (Italy)
5. Department of Physics, Oxford University, Oxford OX1 3PU (United Kingdom)
6. Flerov Laboratory of Nuclear Reactions, JINR, Dubna (Russian Federation)
7. Department of Physics, Tsinghua University, Beijing 100084 (China)

Nuclear properties of nuclei with a few valence nucleons outside the doubly-magic {sup 132}Sn core and located in the octupole correlation region have been investigated via gamma-gamma-gamma coincidence measurements of prompt gamma-ray emitted in the spontaneous fission of {sup 252}Cf with Gammasphere. The high spin level scheme of {sup 134}I has been identified for the first time. Shell model calculations reproduce the level scheme quite well. The level schemes of {sup 137}I and {sup 139}Cs have been reinvestigated and extended. Their nuclear structure is well described by realistic shell model calculations. The g-factors of the 4{sup +} state in {sup 134}Te, 15/2{sup +} state in {sup 135}I, and 15/2{sup -} state in {sup 137}Xe were determined using a newly developed program for angular correlation analysis. The measured g-factors compared favorably with shell model calculations. Octupole correlations are proposed in {sup 141}Cs and {sup 142}Cs. The variations of D{sub 0} in the Cs isotopes exhibit a pronounced drop of dipole moment with increasing neutron number.

• OSTI ID: 21367220
• Journal Information: AIP Conference Proceedings, Vol. 1224, Issue 1; Conference: International symposium on exotic nuclei, Sochi (Russian Federation), 28 Sep - 2 Oct 2009; Other Information: DOI: 10.1063/1.3431475; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR CORRELATION
BETA DECAY
CALIFORNIUM 252
CESIUM ISOTOPES
DIPOLE MOMENTS
ENERGY LEVELS
LANDE FACTOR
NEUTRON-RICH ISOTOPES
NUCLEAR PROPERTIES
NUCLEAR STRUCTURE
OCTUPOLES
PROMPT GAMMA RADIATION
SHELL MODELS
SPIN
SPONTANEOUS FISSION
TELLURIUM 134
TELLURIUM ISOTOPES
TIN 132
XENON 137
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
ANGULAR MOMENTUM
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALIFORNIUM ISOTOPES
CORRELATIONS
DECAY
DIMENSIONLESS NUMBERS
ELECTROMAGNETIC RADIATION
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FISSION
GAMMA RADIATION
HEAVY NUCLEI
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
ISOTOPES
MATHEMATICAL MODELS
MINUTES LIVING RADIOISOTOPES
MULTIPOLES
NUCLEAR DECAY
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
PARTICLE PROPERTIES
RADIATIONS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SPONTANEOUS FISSION RADIOISOTOPES
TIN ISOTOPES
XENON ISOTOPES
YEARS LIVING RADIOISOTOPES