Alpha backgrounds in NaI(Tl) crystals of COSINE-100

  • Adhikari, G.
  • Carlin, N.
  • Cavalcante, D. F. F. S.
  • Cho, J. Y.
  • Choi, J. J.
  • ... Park, H. K.
  • 외 56명
Citations

WEB OF SCIENCE

5
Citations

SCOPUS

6

초록

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 ������ decay and a decay. Analysis of the a channel complements the background model as observed in the ������/������ channel. We present the measurement of the quenching factors and Monte Carlo simulation results and activity quantification of the a decay components of the COSINE -100 NaI(Tl) crystals. The data strongly indicate that the a 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.

키워드

NaI(Tl)210Pb210Po232Th216PoHalf-lifeAlphaQuenching
제목
Alpha backgrounds in NaI(Tl) crystals of COSINE-100
저자
Adhikari, G.Carlin, N.Cavalcante, D. F. F. S.Cho, J. Y.Choi, J. J.Choi, S.Ezeribe, A. C.Franca, L. E.Haf, C.Hahn, I. S.Hollick, S. J.Jeon, E. J.Joo, H. W.Kang, W. G.Kauer, M.Kim, B. H.Kim, H. J.Kim, J.Kim, K. W.Kim, S. H.Kim, S. K.Kim, S. W.Kim, W. K.Kim, Y. D.Kim, Y. H.Ko, Y. J.Lee, D. H.Lee, E. K.Lee, H.Lee, H. S.Lee, H. Y.Lee, I. S.Lee, J.Lee, J. Y.Lee, M. H.Lee, S. H.Lee, S. M.Lee, Y. J.Leonard, D. S.Luank, N. T.Manzato, B. B.Maruyama, R. H.Neal, R. J.Nikkel, J. A.Olsen, S. L.Park, B. J.Park, H. K.Park, H. S.Park, J. C.Park, K. S.Park, S. D.Pitta, R. L. C.Prihtiadi, H.Ra, S. J.Rott, C.Scarff, A.Shin, K. A.Son, M. K.Spooner, N. J. C.Truck, L. T.Yang, L.Yu, G. H.
DOI
10.1016/j.astropartphys.2024.102945
발행일
2024-06
유형
Article
저널명
Astroparticle Physics
158