Decay of mass-separated /sup 141/Cs to /sup 141/Ba and systematics of N = 85 isotones

Journal Article · Wed Sep 01 04:00:00 EDT 1982 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.26.1215· OSTI ID:6710940

Yamamoto, H; Wohn, F K; Sistemich, K; Wolf, A; Walters, W B; Chung, C; Gill, R L; Shmid, M; Chrien, R C; Brenner, D S

The decay of mass-separated /sup 141/Cs produced in thermal neutron fission of /sup 235/U was studied by x-ray and ..gamma..-ray spectroscopy. The level scheme deduced for the N = 85 isotone /sup 141/Ba differs substantially from previous level schemes. A new (7/2)/sup -/ level at 55.0 keV was established as the second-excited state, completing the triplet of low-lying (3/2)/sup -/, (5/2)/sup -/,and (7/2)/sup -/ states expected for this ''quasi-f/sub 7/2/'' nucleus. For transitions among these levels, values of Vertical BardeltaVertical Bar(E2/M1) were deduced. Comparisons are made with level structures of other N = 85 isotones. Systematic trends in energies of states characteristic of quasi-f/sub 7/2/ nuclei are discussed.

• Research Organization: Ames Laboratory and Department of Physics, Iowa State University, Ames, Iowa 50011
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6710940
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 26:3; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ANGULAR MOMENTUM
BARIUM 141
BARIUM ISOTOPES
BARYON REACTIONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
CESIUM 141
CESIUM ISOTOPES
COINCIDENCE SPECTROMETRY
DECAY
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
EVEN-ODD NUCLEI
FISSION
FT VALUE
HADRON REACTIONS
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
ISOTONIC NUCLEI
ISOTOPES
MINUTES LIVING RADIOISOTOPES
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-EVEN NUCLEI
PARITY
PARTICLE PROPERTIES
RADIATIONS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SPIN
TARGETS
THERMAL FISSION
URANIUM 235 TARGET
X RADIATION