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Accession number;01A0231181
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| Title;Detection of ultraviolet .GAMMA.-rays from 229mTh nucleus. |
| Author;
KASAMATSU YOSHITAKA
(Osakadai Daigakuinrigakukenkyuka)
TAKAMIYA KOICHI
(Kyoto Univ., Res. Reactor Inst.)
YAMANA HAJIMU
(Kyoto Univ., Res. Reactor Inst.)
OKUBO YOSHITAKA
(Kyoto Univ., Res. Reactor Inst.)
TOYOSHIMA ATSUSHI
(Osakadai Daigakuinrigakukenkyuka)
SHIBATA SEIICHI
(Kyoto Univ., Res. Reactor Inst.)
MITSUGASHIRA TOSHIAKI
(Inst. for Mater. Res., Tohoku Univ.)
KAWASE YOICHI
(Kyoto Univ., Res. Reactor Inst.)
SHINOHARA ATSUSHI
(Osakadai Daigakuinrigakukenkyuka)
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Journal Title;Abstracts of Papers. Symposium on Radiochemistry
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Journal Code:F0139B
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ISSN:1345-2762
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VOL.44th;NO.;PAGE.24(2000)
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| Figure&Table&Reference; |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;It has been suggested that 229Th nucleus has an anomalously low-lying isomer state (229mTh) of 3.5.+-.1.0eV. The excitation energy corresponds to 350nm ultraviolet photons. It has been estimated that about 1-2 percent of the total .ALPHA. decays of 233U feed into 229mTh. We separated 229Th from 233U with anion exchange method, and tried to detect ultraviolet.GAMMA.-rays from 229mTh and determine the half-life of 229mTh with a low-noise photomultiplier. (author abst.) |
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