Identification and decay of neutron-rich /sup 102/Sr and level structure of Aapprox. 100 Y nuclei

Journal Article · Thu May 01 04:00:00 EDT 1986 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.33.1727· OSTI ID:5872199

Hill, J C; Winger, J A; Wohn, F K; Petry, R F; Goulden, J D; Gill, R L; Piotrowski, A; Mach, H

The previously unreported decay of /sup 102/Sr to levels in /sup 102/Y has been studied from mass-separated activity produced in the thermal neutron fission of /sup 235/U. A half-life for /sup 102/Sr was measured to be 68 +- 8 ms. Based on ..gamma.. singles and coincidence measurements, 24 ..gamma.. rays were placed in a level scheme for /sup 102/Y with nine excited states up to 1689 keV. Four excited states were assigned a J/sup ..pi../ of 1/sup +/ from logft values. Evidence for delayed-neutron emission from /sup 102/Sr is reported. These results are compared with systematics for other neighboring, highly deformed, odd-odd Y and Nb nuclei. The level structure of Aapprox.100 Y nuclei, which exhibit a very abrupt transition from spherical to highly deformed shapes, is reviewed. The possibility of the existence of bands with moments of inertia close to that of a rigid rotor is discussed.

• Research Organization: Ames Laboratory, Ames, Iowa; Iowa State University, Ames, Iowa 50011
• DOE Contract Number: W-7405-ENG-82; AC02-76CH00016
• OSTI ID: 5872199
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 33:5; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
ANGULAR MOMENTUM
BARYON REACTIONS
BARYONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
COINCIDENCE SPECTROMETRY
DATA
DECAY
DEFORMED NUCLEI
DELAYED NEUTRONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EMISSION
ENERGY LEVELS
EVEN-ODD NUCLEI
EXCITED STATES
EXPERIMENTAL DATA
FERMIONS
FISSION
FISSION NEUTRONS
FT VALUE
GAMMA RADIATION
HADRON REACTIONS
HADRONS
HALF-LIFE
HEAVY NUCLEI
INFORMATION
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MINUTES LIVING RADIOISOTOPES
MOMENT OF INERTIA
NEUTRON EMISSION
NEUTRON REACTIONS
NEUTRON-RICH ISOTOPES
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
NUMERICAL DATA
ODD-ODD NUCLEI
PARITY
PARTICLE PROPERTIES
RADIATIONS
RADIOISOTOPES
ROTATIONAL STATES
SPIN
STRONTIUM 102
STRONTIUM ISOTOPES
THERMAL FISSION
URANIUM 235
URANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES
YTTRIUM 102
YTTRIUM ISOTOPES