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1333.1 and 1559.4 keV isomers in $sup 176$Hf

Journal Article · · Can. J. Phys., v. 51, no. 2, pp. 153-157
OSTI ID:4353724
The half-lives of the 1333.1 and 1559.4 keV isomers in /sup 176/Hf were determined to be 9.5 plus or minus 0.2 and 9.8 plus or minus 0.2 mu s respectively. The upper isomer feeds the lower by means of a 226.25 plus or minus 0.06 keV (M2) transition and a 53.49 plus or minus 0.07 -- l72.75 plus or minus 0.04 keV cascade. The multipolarities of the members of the cascade are E1 and {M1(76 plus or minus l3%) + E2(24 plus or minus 13%)} respectively. Because it is fed from the upper state, the 1333.1 keV state appears to decay with a half-life significantly longer than its true value. The half-life of this state was therefore determined by using a TAC to measure the elapsed time between the detection of a gamma ray feeding the state and one deexciting it. (auth)
Research Organization:
McMaster Univ., Hamilton, Ont.
NSA Number:
NSA-29-017254
OSTI ID:
4353724
Journal Information:
Can. J. Phys., v. 51, no. 2, pp. 153-157, Journal Name: Can. J. Phys., v. 51, no. 2, pp. 153-157; ISSN CJPHA
Country of Publication:
Canada
Language:
English

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