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Pulse-shape discrimination between electron and nuclear recoils in a NaI(Tl) crystal

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Title
Pulse-shape discrimination between electron and nuclear recoils in a NaI(Tl) crystal
Author(s)
Lee H.S.; Adhikari G.; Adhikari P.; Choi S.; Hahn I.S.; E. J. Jeon; Joo H.W.; W. G. Kang; G. B. Kim; Kim H.J.; H. O. Kim; Kim K.W.; N. Y. Kim; Kim S.K.; Y. D. Kim; Y. H. Kim; Lee J.H.; M. H. Lee; D. S. Leonard; J. Li; Oh S.Y.; Stephen Lars Olsen; H. K. Park; Park H.S.; K. S. Park; J. H. Shim; J. H. So
Publication Date
2015-08
Journal
Journal of High Energy Physics, v.8, no., pp.093 -
Abstract
Abstract: We report on the response of a high light-output NaI(Tl) crystal to nuclear recoils induced by neutrons from an Am-Be source and compare the results with the response to electron recoils produced by Compton-scattered 662 keV γ-rays from a 137Cs source. The measured pulse-shape discrimination (PSD) power of the NaI(Tl) crystal is found to be significantly improved because of the high light output of the NaI(Tl) detector. We quantify the PSD power with a quality factor and estimate the sensitivity to the interaction rate for weakly interacting massive particles (WIMPs) with nucleons, and the result is compared with the annual modulation amplitude observed by the DAMA/LIBRA experiment. The sensitivity to spin-independent WIMP-nucleon interactions based on 100 kg·year of data from NaI detectors is estimated with simulated experiments, using the standard halo model. © 2015, The Author(s)
URI
http://pr.ibs.re.kr/handle/8788114/1946
DOI
10.1007/JHEP08(2015)093
ISSN
1029-8479
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > Journal Papers (저널논문)
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