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Simulation Study for the Half-Life Measurement of Ta-180m Using HPGe Detectors

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dc.contributor.authorG. W. Kim-
dc.contributor.authorS. Y. Park-
dc.contributor.authorI. S. Hahn-
dc.contributor.authorYeongduk Kim-
dc.contributor.authorMoo Hyun Lee-
dc.contributor.authorLeonard Douglas-
dc.contributor.authorEun Kyoung Lee-
dc.contributor.authorWoon Gu Kang-
dc.contributor.authorSala Elena-
dc.contributor.authorV. Kazalov-
dc.date.available2019-11-28T06:13:51Z-
dc.date.created2019-08-20-
dc.date.issued2019-07-
dc.identifier.issn0374-4884-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/6586-
dc.description.abstractTa-180m, which is the second excited state of Ta-180 at E-x = 77 keV, is naturally occurring and is the only known stable isomer. The half-life of Ta-180m is considered to be an important parameter for nuclear synthesis models for heavy elements. However, the decay of Ta-180m has never been observed even though several groups tried to measure it. We will search for gamma transitions from Ta-180m decays in a tantalum sample by using an array of fourteen HPGe detectors recently installed in an underground laboratory at Yangyang, Korea. In preparation for the measurement, Monte-Carlo simulation studies were conducted to optimize the tantalum sample configuration. Based on the simulation study, we decided on a configuration composed of a 2 mm thick disk with diameter of 200 mm and six 2 mm thick rectangular plates with dimension of 158 x 195 mm(2). The finalized tantalum sample configuration gives 2.0 and 7.5 coincidence events per year for the EC and the beta-decay of Ta-180m, respectively. In this study, we used T-1/2 =2.0 x 10(17) years and T-1/2 = 5.8 x 10(16) years for the EC and beta-decay which are the present best lower-limits as reported by B. Lehnert et al. c 2019 The Korean Physical Society-
dc.description.uri1-
dc.language영어-
dc.publisherKOREAN PHYSICAL SOC-
dc.subjectHPGe detector-
dc.subjectMonte-Carlo simulation-
dc.subjectBeta decay-
dc.subjectTa-180m-
dc.titleSimulation Study for the Half-Life Measurement of Ta-180m Using HPGe Detectors-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000475631400006-
dc.identifier.scopusid2-s2.0-85068784648-
dc.identifier.rimsid69504-
dc.contributor.affiliatedAuthorYeongduk Kim-
dc.contributor.affiliatedAuthorMoo Hyun Lee-
dc.contributor.affiliatedAuthorLeonard Douglas-
dc.contributor.affiliatedAuthorEun Kyoung Lee-
dc.contributor.affiliatedAuthorWoon Gu Kang-
dc.contributor.affiliatedAuthorSala Elena-
dc.identifier.doi10.3938/jkps.75.32-
dc.identifier.bibliographicCitationJOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.75, no.1, pp.32 - 39-
dc.citation.titleJOURNAL OF THE KOREAN PHYSICAL SOCIETY-
dc.citation.volume75-
dc.citation.number1-
dc.citation.startPage32-
dc.citation.endPage39-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.description.journalRegisteredClasskci-
dc.subject.keywordPlusNUCLEOSYNTHESIS-
dc.subject.keywordPlusRADIOACTIVITY-
dc.subject.keywordPlusSEARCH-
dc.subject.keywordAuthorHPGe detector-
dc.subject.keywordAuthorMonte-Carlo simulation-
dc.subject.keywordAuthorBeta decay-
dc.subject.keywordAuthorTa-180m-
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > 1. Journal Papers (저널논문)
Center for Axion and Precision Physics Research(액시온 및 극한상호작용 연구단) > 1. Journal Papers (저널논문)
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