Published June 2002
| Version v1
Report
The half-life of Sm-147
Creators
- 1. Kanazawa Univ., Graduate School of Natural Science and Technology, Kanazawa, Ishikawa (Japan)
- 2. Kanazawa Univ., Faculty of Science, Kanazawa, Ishikawa (Japan)
Description
The alpha decay half-life of 147Sm has been reevaluated by means of alpha-spectrometry using silicon surface barrier detector. In the present work, known amount of standard solution of natural Sm was mixed with known amount of calibrated 210Po, 238U or 241Am solution to prepare thin deposit for the alpha-spectrometry. The alpha-disintegration rate of known amount of 147Sm was determined by referring to the alpha activity of 210Po, 238U or 241Am. The half-life of 147Sm was determined in this work to be (1.18 ± 0.02)x1011 y. This value is about 20% longer than the currently adopted value of (1.06 ± 0.02)x1011 y. (author)
Additional details
Publishing Information
- Imprint Title
- Proceedings of the third workshop on environmental radioactivity
- Imprint Pagination
- 300 p.
- Journal Page Range
- p. 156-158
- Report number
- KEK-PROC--2002-7
Conference
- Title
- 3. workshop on environmental radioactivity
- Dates
- 5-7 Mar 2002
- Place
- Tsukuba, Ibaraki (Japan)
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 34004268
- Subject category
- S07: ISOTOPES AND RADIATION SOURCES; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Conference, Non-conventional Literature
- Descriptors DEI
- ALPHA DECAY; ALPHA SPECTROSCOPY; AMERICIUM 241; HALF-LIFE; ISOTOPE RATIO; LEAD 210; MASS SPECTROSCOPY; POLONIUM 210; SAMARIUM 146; SAMARIUM 147; SURFACE BARRIER DETECTORS; URANIUM 238
- Descriptors DEC
- ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; AMERICIUM ISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; DAYS LIVING RADIOISOTOPES; DECAY; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; HEAVY NUCLEI; INTERMEDIATE MASS NUCLEI; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LEAD ISOTOPES; MEASURING INSTRUMENTS; NANOSEC LIVING RADIOISOTOPES; NUCLEAR DECAY; NUCLEI; ODD-EVEN NUCLEI; POLONIUM ISOTOPES; RADIATION DETECTORS; RADIOISOTOPES; RARE EARTH NUCLEI; SAMARIUM ISOTOPES; SEMICONDUCTOR DETECTORS; SPECTROSCOPY; SPONTANEOUS FISSION RADIOISOTOPES; URANIUM ISOTOPES; YEARS LIVING RADIOISOTOPES
Optional Information
- Notes
- 10 refs., 1 fig.