Published 2011 | Version v1
Journal article Metadata-only

Precision measurements of the half-life of 196Au and 202Tl

Creators

  • 1. Tohoku Univ., Sendai (Japan). Research Center for Electron Photon Science
  • 2. Osaka Univ. (Japan). Graduate School of Science

Description

The half-lives of 196Au and 202Tl have been precisely obtained by repeated measurements for 40 samples of 196Au and 16 samples of 202Tl using germanium detectors. The dead-time was corrected by the simultaneous detection of 662-keV γ rays from a reference source of 137Cs. The half-life value of 6.1451±0.0013 (tot.) d, 0.35% shorter than the recommended value of ENSDF [1], has been obtained for 196Au. The error contains the statistical uncertainty and other random uncertainty. The half-life of 202Tl is determined to be 12.4706±0.0055 (tot.) d with improved accuracy as compared to the latest measurement by a factor of 15. (orig.)

Additional details

Publishing Information

Journal Title
Proceedings in Radiochemistry
Journal Volume
1
Journal Page Range
p. 109-111
ISSN
2193-2875

Conference

Title
4. international conference in the series of Asia-Pacific symposium on radiochemistry
Acronym
APSORC-09
Dates
29 Nov - 4 Dec 2009
Place
Napa, CA (United States)

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
44061076
Subject category
S07: ISOTOPES AND RADIATION SOURCES; S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ACCURACY; CALIBRATION STANDARDS; CESIUM 137; DAYS LIVING RADIOISOTOPES; DEAD TIME; ERRORS; GAMMA DETECTION; GE SEMICONDUCTOR DETECTORS; GOLD 196; HALF-LIFE; KEV RANGE 100-1000; RADIOCHEMISTRY; THALLIUM 202
Descriptors DEC
BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CESIUM ISOTOPES; CHEMISTRY; DAYS LIVING RADIOISOTOPES; DETECTION; ELECTRON CAPTURE RADIOISOTOPES; ENERGY RANGE; GOLD ISOTOPES; HEAVY NUCLEI; HOURS LIVING RADIOISOTOPES; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; KEV RANGE; MEASURING INSTRUMENTS; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; RADIATION DETECTION; RADIATION DETECTORS; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; SEMICONDUCTOR DETECTORS; STANDARDS; THALLIUM ISOTOPES; TIMING PROPERTIES; YEARS LIVING RADIOISOTOPES