Absolute intensities of {gamma} rays in {sup 182}Hf decay

Journal Article · Fri Oct 01 04:00:00 EDT 2004 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.70.047301· OSTI ID:20695697

Ahmad, I; Greene, J P; Moore, E F; Kutschera, W; Vockenhuber, C ^[1]

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1. Argonne National Laboratory, Argonne, Illinois 60439 (United States)

The absolute intensities of {gamma} rays produced in the decay of {sup 182}Hf were determined by measuring its {gamma}-ray spectra with high-resolution Ge spectrometers. Because the sample was chemically purified more than 30 years ago, the daughter {sup 182}Ta (t{sub 1/2}=114.43 d) was in secular equilibrium with {sup 182}Hf (t{sub 1/2}=8.90x10{sup 6} yr). The absolute intensities of {sup 182}Hf {gamma} rays were determined with respect to the intensities of {sup 182}Ta {gamma} lines. In order to minimize summing losses from the peak areas, spectra were measured at low absolute efficiencies. The absolute intensity of the 270.4-keV-{gamma} ray was found to be (79.0{+-}0.6)% per {sup 182}Hf {beta}{sup -} decay.

• OSTI ID: 20695697
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 70; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
EFFICIENCY
GAMMA RADIATION
GAMMA SPECTRA
GAMMA SPECTROSCOPY
HAFNIUM 182
KEV RANGE
RESOLUTION
TANTALUM 182