Ultra-low gamma-ray measurement system for neutrinoless double beta decay

W. G. Kang; J. H. Choi; E. J. Jeon; J. I. Lee; H. J. Kim; S. K. Kim; Y. D. Kim; J. H. Lee; K. J. Ma; S. S. Myung; J. H. So

doi:10.1016/j.apradiso.2013.03.057

Ultra-low gamma-ray measurement system for neutrinoless double beta decay

W. G. Kang, J. H. Choi, E. J. Jeon, J. I. Lee, H. J. Kim, S. K. Kim, Y. D. Kim, J. H. Lee, K. J. Ma, S. S. Myung, J. H. So

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5 Scopus citations

Abstract

An experiment for the detection of 0νβ⁺/EC and 0νEC/EC in 92Mo nuclei has been carried out with a scintillating crystal, CaMoO₄, in coincidence with the HPGe detector. We study the background events inside the event selection window for 0ν β⁺/EC decays of CaMoO₄ detector. For 51.2 days of data taking period, we didn't observe any event in the neutrinoless EC/EC decay event window. The ⁹²Mo 0νβ⁺/EC decay half-life limit was set to 0.61×10²⁰ years with a 90% confidence by method of Feldman and Cousins. This ultra-low gamma ray measurement utilizing coincidence technique can be used for the resonant EC/EC decay process of some nuclei which is potentially important for neutrinoless double beta decay process.

Original language	English
Pages (from-to)	290-293
Number of pages	4
Journal	Applied Radiation and Isotopes
Volume	81
DOIs	https://doi.org/10.1016/j.apradiso.2013.03.057
State	Published - Nov 2013

Keywords

0νβ/EC
Mo
Neutrinoless double beta decay

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10.1016/j.apradiso.2013.03.057

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title = "Ultra-low gamma-ray measurement system for neutrinoless double beta decay",

abstract = "An experiment for the detection of 0νβ+/EC and 0νEC/EC in 92Mo nuclei has been carried out with a scintillating crystal, CaMoO4, in coincidence with the HPGe detector. We study the background events inside the event selection window for 0ν β+/EC decays of CaMoO4 detector. For 51.2 days of data taking period, we didn't observe any event in the neutrinoless EC/EC decay event window. The 92Mo 0νβ+/EC decay half-life limit was set to 0.61×1020 years with a 90% confidence by method of Feldman and Cousins. This ultra-low gamma ray measurement utilizing coincidence technique can be used for the resonant EC/EC decay process of some nuclei which is potentially important for neutrinoless double beta decay process.",

keywords = "0νβ/EC, Mo, Neutrinoless double beta decay",

author = "Kang, {W. G.} and Choi, {J. H.} and Jeon, {E. J.} and Lee, {J. I.} and Kim, {H. J.} and Kim, {S. K.} and Kim, {Y. D.} and Lee, {J. H.} and Ma, {K. J.} and Myung, {S. S.} and So, {J. H.}",

year = "2013",

month = nov,

doi = "10.1016/j.apradiso.2013.03.057",

language = "English",

volume = "81",

pages = "290--293",

journal = "Applied Radiation and Isotopes",

issn = "0969-8043",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - Ultra-low gamma-ray measurement system for neutrinoless double beta decay

AU - Kang, W. G.

AU - Choi, J. H.

AU - Jeon, E. J.

AU - Lee, J. I.

AU - Kim, H. J.

AU - Kim, S. K.

AU - Kim, Y. D.

AU - Lee, J. H.

AU - Ma, K. J.

AU - Myung, S. S.

AU - So, J. H.

PY - 2013/11

Y1 - 2013/11

N2 - An experiment for the detection of 0νβ+/EC and 0νEC/EC in 92Mo nuclei has been carried out with a scintillating crystal, CaMoO4, in coincidence with the HPGe detector. We study the background events inside the event selection window for 0ν β+/EC decays of CaMoO4 detector. For 51.2 days of data taking period, we didn't observe any event in the neutrinoless EC/EC decay event window. The 92Mo 0νβ+/EC decay half-life limit was set to 0.61×1020 years with a 90% confidence by method of Feldman and Cousins. This ultra-low gamma ray measurement utilizing coincidence technique can be used for the resonant EC/EC decay process of some nuclei which is potentially important for neutrinoless double beta decay process.

AB - An experiment for the detection of 0νβ+/EC and 0νEC/EC in 92Mo nuclei has been carried out with a scintillating crystal, CaMoO4, in coincidence with the HPGe detector. We study the background events inside the event selection window for 0ν β+/EC decays of CaMoO4 detector. For 51.2 days of data taking period, we didn't observe any event in the neutrinoless EC/EC decay event window. The 92Mo 0νβ+/EC decay half-life limit was set to 0.61×1020 years with a 90% confidence by method of Feldman and Cousins. This ultra-low gamma ray measurement utilizing coincidence technique can be used for the resonant EC/EC decay process of some nuclei which is potentially important for neutrinoless double beta decay process.

KW - 0νβ/EC

KW - Mo

KW - Neutrinoless double beta decay

UR - http://www.scopus.com/inward/record.url?scp=84883462514&partnerID=8YFLogxK

U2 - 10.1016/j.apradiso.2013.03.057

DO - 10.1016/j.apradiso.2013.03.057

M3 - Article

C2 - 23726518

AN - SCOPUS:84883462514

SN - 0969-8043

VL - 81

SP - 290

EP - 293

JO - Applied Radiation and Isotopes

JF - Applied Radiation and Isotopes

ER -

Ultra-low gamma-ray measurement system for neutrinoless double beta decay

Abstract

Keywords

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