Journal article
Half-life of Cu-67
JOURNAL OF PHYSICS COMMUNICATIONS, Vol.5(8), 085007
08/01/2021
DOI: 10.1088/2399-6528/ac1ad8
Abstract
The half-life of Cu-67 was determined through serial gamma-ray spectrometry measurements of the dominant gamma emission (E (gamma) : 184.6 keV; branching ratio: 48.7%) produced following beta- decay. Data were collected consecutively for 1000 s per measurement, with a total of 3063 measurements over the duration of 36 days. The incidence rate for the 184.6 keV gamma-ray was determined from the spectral peak area and duration of each measurement. This rate was then corrected to account for detector dead-time, radioactive decay during each acquisition and drift in the computer clock in comparison to NIST nuclear clock. Least-squares regression analysis was performed to determine the half-life of Cu-67. The result was 61.761 +/- 0.004 h, which is the highest precision measurement to date, and marks a 24-fold precision improvement over the current Nuclear Data Sheets value.
Details
- Title: Subtitle
- Half-life of Cu-67
- Creators
- Michael J. Merrick - University of IowaDavid A. Rotsch - Argonne National LaboratoryAshok Tiwari - University of IowaJerry Nolen - Argonne National LaboratoryThomas Brossard - Argonne National LaboratoryJeongseog Song - Argonne National LaboratoryThaddeus J. Wadas - University of IowaJohn J. Sunderland - University of IowaStephen A. Graves - University of Iowa
- Resource Type
- Journal article
- Publication Details
- JOURNAL OF PHYSICS COMMUNICATIONS, Vol.5(8), 085007
- DOI
- 10.1088/2399-6528/ac1ad8
- ISSN
- 2399-6528
- Publisher
- Iop Publishing Ltd
- Number of pages
- 4
- Grant note
- US Department of Energy Isotope Program
- Language
- English
- Date published
- 08/01/2021
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Radiology; Physics and Astronomy; Radiation Oncology
- Record Identifier
- 9984313078902771
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