@article{276cbcfcfe044dc7aa003a2f575e205c,
title = "Alpha backgrounds in NaI(Tl) crystals of COSINE-100",
abstract = "COSINE-100 is a dark matter direct detection experiment with 106 kg NaI(Tl) as the target material. 210Pb and daughter isotopes are a dominant background in the WIMP region of interest and are detected via β decay and α decay. Analysis of the α channel complements the background model as observed in the β/γ channel. We present the measurement of the quenching factors and Monte Carlo simulation results and activity quantification of the α decay components of the COSINE-100 NaI(Tl) crystals. The data strongly indicate that the α decays probabilistically undergo two possible quenching factors but require further investigation. The fitted results are consistent with independent measurements and improve the overall understanding of the COSINE-100 backgrounds. Furthermore, the half-life of 216Po has been measured to be 143.4±1.2 ms, which is consistent with and more precise than most current measurements.",
keywords = "Alpha, Half-life, NaI(Tl), Pb, Po, Po, Quenching, Th",
author = "{COSINE-100 Collaboration} and G. Adhikari and N. Carlin and Cavalcante, {D. F.F.S.} and Cho, {J. Y.} and Choi, {J. J.} and S. Choi and Ezeribe, {A. C.} and Fran{\c c}a, {L. E.} and C. Ha and Hahn, {I. S.} and Hollick, {S. J.} and Jeon, {E. J.} and Joo, {H. W.} and Kang, {W. G.} and M. Kauer and Kim, {B. H.} and Kim, {H. J.} and J. Kim and Kim, {K. W.} and Kim, {S. H.} and Kim, {S. K.} and Kim, {S. W.} and Kim, {W. K.} and Kim, {Y. D.} and Kim, {Y. H.} and Ko, {Y. J.} and Lee, {D. H.} and Lee, {E. K.} and H. Lee and Lee, {H. S.} and Lee, {H. Y.} and Lee, {I. S.} and J. Lee and Lee, {J. Y.} and Lee, {M. H.} and Lee, {S. H.} and Lee, {S. M.} and Lee, {Y. J.} and Leonard, {D. S.} and Luan, {N. T.} and Manzato, {B. B.} and Maruyama, {R. H.} and Neal, {R. J.} and Nikkel, {J. A.} and Olsen, {S. L.} and Park, {B. J.} and Park, {H. K.} and Park, {H. S.} and Park, {J. C.} and Park, {K. S.}",
note = "Publisher Copyright: {\textcopyright} 2024 Elsevier B.V.",
year = "2024",
month = jun,
day = "1",
doi = "10.1016/j.astropartphys.2024.102945",
language = "English",
volume = "158",
journal = "Astroparticle Physics",
issn = "0927-6505",
publisher = "Elsevier B.V.",
}