Yrast Excitations around Doubly Magic {sup {bold 132}}Sn from Fission Product {bold {gamma}}-Ray Studies

Journal Article · Tue Oct 01 00:00:00 EDT 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.77.3743· OSTI ID:389364

Zhang, C T; Bhattacharyya, P; Daly, P J; Broda, R; Grabowski, Z W; Nisius, D ^[1]; Ahmad, I; Ishii, T; Carpenter, M P; Morss, L R ^[2]; Phillips, W R; Durell, J L; Leddy, M J; Smith, A G; Urban, W; Varley, B J ^[3]; Schulz, N; Lubkiewicz, E; Bentaleb, M ^[4]; Blomqvist, J ^[5]

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1. Chemistry and Physics Departments, Purdue University, West Lafayette, Indiana 47907 (United States)
2. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
3. Department of Physics and Astronomy, University of Manchester, M13 9PL Manchester (United Kingdom)
4. Centre de Recherches Nucleaires, Universite Louis Pasteur, F-67037 Strasbourg (France)
5. Department of Physics Frescati, Royal Institute of Technology, S-10405 Stockholm (Sweden)

Prompt {gamma}-ray cascades in neutron-rich nuclei around doubly magic {sup 132}Sn have been studied at Eurogam II using a {sup 248}Cm fission source. Yrast states to above 5.5 MeV in the two- and three-proton {ital N}=82 isotones {sup 134}Te and {sup 135}I are reported. They are interpreted in terms of valence proton and particle-hole core excitations with the help of shell model calculations employing empirical nucleon-nucleon interactions from both {sup 132}Sn and {sup 208}Pb regions. A serious inconsistency in the accepted masses of {ital N}=82 isotones near {sup 132}Sn is discovered but not resolved. {copyright} {ital 1996 The American Physical Society.}

• DOE Contract Number: FG02-87ER40346; W-31109-ENG-38
• OSTI ID: 389364
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 18 Vol. 77; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CURIUM 248
EXCITATION
FISSION
GAMMA RADIATION
IODINE 135
LEAD 208
NEUTRON-RICH ISOTOPES
NUCLEON-NUCLEON INTERACTIONS
PARTICLE-HOLE MODEL
SHELL MODELS
TELLURIUM 134
TIN 132
YRAST STATES