Investigation of A = 152 radioactivities with mass-separated sources: Identification of /sup 152/Lu

Journal Article · Wed Dec 31 23:00:00 EST 1986 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.35.310· OSTI ID:6729364

Toth, K S; Sousa, D C; Nitschke, J M; Wilmarth, P A

Nuclides with A = 152 were produced in /sup 58/Ni bombardments of /sup 96/Ru and their decay properties were investigated following on-line mass separation. The isotope /sup 152/Lu (T/sub 1/2/ = 0.7 +- 0.1 s) was identified by ..gamma.. rays in its ..beta..-decay daughter, /sup 152/Yb. Based on its decay characteristics, the parent state has a probable spin and parity assignment of (4,5,6/sup -/). Several new transitions were observed to follow the ..beta.. decays of /sup 152/Yb and the /sup 152/Tm low-spin isomer; they established previously unknown levels in both /sup 152/Tm and /sup 152/Er. The additional ..gamma.. rays in /sup 152/Yb decay reduce from 100% to 88% the direct feeding to the one excited state in /sup 152/Tm that had been known earlier. Nevertheless, the corresponding logft value is calculated to be 3.5, indicating that this is an allowed ..beta.. transition which connects the 0/sup +/ parent with a 1/sup +/ excited state in /sup 152/Tm. By comparing the ..beta..-decay rates of /sup 148/Dy and /sup 152/Ho, and the ..cap alpha..- and ..beta..-decay rates of /sup 152/Er, an ..cap alpha.. branch of 90 +- 4 % was deduced for /sup 152/Er.

• Research Organization: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6729364
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 35:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY RADIOISOTOPES
ALPHA PARTICLES
ANGULAR MOMENTUM
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY
BETA-PLUS DECAY RADIOISOTOPES
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
COMPOUND-NUCLEUS REACTIONS
DATA
DECAY
DYSPROSIUM 148
DYSPROSIUM ISOTOPES
ENERGY-LEVEL TRANSITIONS
ERBIUM 152
ERBIUM ISOTOPES
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FT VALUE
GAMMA SPECTRA
HALF-LIFE
HEAVY ION REACTIONS
HOLMIUM 152
HOLMIUM ISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
LUTETIUM 153
LUTETIUM ISOTOPES
MINUTES LIVING RADIOISOTOPES
NICKEL 58 REACTIONS
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PARITY
PARTICLE PROPERTIES
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
RUTHENIUM 96 TARGET
SPECTRA
SPIN
TARGETS
THULIUM 152
THULIUM ISOTOPES
YTTERBIUM 152
YTTERBIUM ISOTOPES