Decay of mass-separated /sup 156/Yb

Journal Article · Mon Feb 28 23:00:00 EST 1983 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.27.1182· OSTI ID:6076450

Mlekodaj, R L; Spejewski, E H; Toth, K S; Ellis-Akovali, Y A

The isotope /sup 156/Yb was produced via the /sup 147/Sm(/sup 16/O,7n) reaction and was mass separated with an on-line isotope separator. Its decay properties were studied by using ..gamma..-ray, x-ray, and ..cap alpha..-particle detectors. The half-life and ..cap alpha.. decay energy extracted were found to agree with values from earlier ..cap alpha..-decay investigations. In addition, the (EC+..beta../sup +/) decay of /sup 156/Yb was identified for the first time. This decay to /sup 156/Tm is accompanied by only one strong ..gamma.. ray, an E1 transition of 115.2 +- 0.2 keV. It is proposed that, as in the case of the /sup 148,150,152/Dy decays to odd-odd terbium nuclei, essentially all of the /sup 156/Yb ..beta.. decay proceeds to a 1/sup +/ level in /sup 156/Tm at approx.115 keV by an allowed transition, logftapprox.3.9. This 1/sup +/ level then depopulates to a 2/sup -/ at or near the ground state. Alpha-decay branching ratios were deduced for /sup 156/Yb, /sup 156/Tm, /sup 152/Er, and /sup 152/Ho.

• Research Organization: UNISOR, Oak Ridge Associated Universities, Oak Ridge, Tennessee 37830
• OSTI ID: 6076450
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 27:3; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651822* -- Nuclear Properties & Reactions
A=150-189
Experimental-- Radioactive Decay-- (-1987)
651823 -- Nuclear Properties & Reactions
A=150-189
Experimental-- Energy Levels & Transitions-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
ALPHA DECAY RADIOISOTOPES
ANGULAR MOMENTUM
BETA DECAY
BRANCHING RATIO
CHARGED-PARTICLE REACTIONS
DATA
DECAY
E1-TRANSITIONS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FT VALUE
GAMMA SPECTRA
HALF-LIFE
HEAVY ION REACTIONS
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
MINUTES LIVING RADIOISOTOPES
MULTIPOLARITY
MULTIPOLE TRANSITIONS
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
OXYGEN 16 REACTIONS
PARITY
PARTICLE PROPERTIES
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SAMARIUM 147 TARGET
SECONDS LIVING RADIOISOTOPES
SPECTRA
SPIN
TARGETS
THULIUM 156
THULIUM ISOTOPES
YTTERBIUM 156
YTTERBIUM ISOTOPES