13 citations · 33 across the 5 of their papers we have counts for
16 papers
Radon concentration variations at the Yangyang underground laboratory
C. Ha, Y. Jeong, W. G. Kang +9
The concentration of radon in the air has been measured in the 700 m-deep Yangyang underground laboratory between October 2004 and May 2022. The average concentrations in two exper…
Identification of new isomers in Ac : Impact on dark matter searches
K. W. Kim, G. Adhikari, E. Barbosa de Souza +50
We report the identification of metastable isomeric states of Ac at 6.28 keV, 6.67 keV and 20.19 keV, with lifetimes of an order of 100 ns. These states are produced by the…
Improving the light collection using a new NaI(Tl)crystal encapsulation
J. J. Choi, B. J. Park, C. Ha +7
NaI(Tl) crystals are used as particle detectors in a variety of rare-event search experiments because of their superb light-emission quality. The crystal light yield is generally h…
Lowering the energy threshold in COSINE-100 dark matter searches
G. Adhikari, E. Barbosa de Souza, N. Carlin +43
COSINE-100 is a dark matter detection experiment that uses NaI(Tl) crystal detectors operating at the Yangyang underground laboratory in Korea since September 2016. Its main goal i…
Development of ultra-pure NaI(Tl) detectors for the COSINE-200 experiment
B. J. Park, J. J. Choe, J. S. Choi +17
The annual modulation signal observed by the DAMA experiment is a long-standing question in the community of dark matter direct detection. This necessitates an independent verifica…
Depth profile study of Pb in the surface of an NaI(Tl) crystal
G. H. Yu, C. Ha, E. J. Jeon +6
The surface Pb is one of the main background sources for dark-matter-search experiments using NaI(Tl) crystals, and its spectral features associated with the beta-decay eve…