BROWSE

Related Scientist

Kim, Gowoon's photo.

Kim, Gowoon
지하실험 연구단
more info

ITEM VIEW & DOWNLOAD

Improved intensities for the gamma transitions with E-gamma > 3 MeV from Pb-208

Cited 0 time in webofscience Cited 0 time in scopus
17 Viewed 0 Downloaded
Title
Improved intensities for the gamma transitions with E-gamma > 3 MeV from Pb-208
Author(s)
Kim, Gowoon; Kevin Insik, Hahn; Woon Gu, Kang; Kim, Yeongduk; Lee, Eun Kyoung; Lee Moo Hyun; Douglas, Leonard; Su-Yeon Park
Publication Date
2020-12
Journal
Physical Review c, v.102, no.6, pp.1 - 7
Publisher
AMER PHYSICAL SOC
Abstract
Pb-208 is a doubly magic nucleus which has been studied extensively by many experiments and nuclear models. Its properties, such as excitation energies, spins, and parities of the ground and excited states are well known. However, some gamma transitions with E-gamma > 3 MeV from the excited states to the ground state in Pb-208 have never been observed. The intensities of these gamma transitions are important issues for 0 nu beta beta decay searches because these transitions can make non-negligible background signals depending on their intensities. We conducted a measurement to search for the 3197.7, 3475.1, and 3708.4 keV transitions, which are emitted from the second, third, and fourth excited states in Pb-208, respectively. A 2 kg ThO2 sample was measured using a 100% relative efficiency high-purity germanium detector for 39.5 days at Y2L, an underground laboratory in Yangyang, Korea. We improved upper limits for intensities of the 3197.7, 3475.1, and 3708.4 keV gamma transitions as <1.2 x 10(-4)%, <1.4 x 10(-4)%, and <1.2 x 10(-4)%, respectively. These upper limits are at least a factor of 19 better than the previous results.
URI
https://pr.ibs.re.kr/handle/8788114/9087
DOI
10.1103/PhysRevC.102.064306
ISSN
2469-9985
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > 1. Journal Papers (저널논문)
Center for Exotic Nuclear Studies(희귀 핵 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse