@article{e4745fd391af4801941f896ab8e06140,
title = "A measurement of the time profile of scintillation induced by low energy gamma-rays in liquid xenon with the XMASS-I detector",
abstract = "We report the measurement of the emission time profile of scintillation from gamma-ray induced events in the XMASS-I 832 kg liquid xenon scintillation detector. Decay time constant was derived from a comparison of scintillation photon timing distributions between the observed data and simulated samples in order to take into account optical processes such as absorption and scattering in liquid xenon. Calibration data of radioactive sources, 55Fe, 241Am, and 57Co were used to obtain the decay time constant. Assuming two decay components, τ1 and τ2, the decay time constant τ2 increased from 27.9 ns to 37.0 ns as the gamma-ray energy increased from 5.9 keV to 122 keV. The accuracy of the measurement was better than 1.5 ns at all energy levels. A fast decay component with τ1∼2ns was necessary to reproduce data. Energy dependencies of τ2 and the fraction of the fast decay component were studied as a function of the kinetic energy of electrons induced by gamma-rays. The obtained data almost reproduced previously reported results and extended them to the lower energy region relevant to direct dark matter searches.",
keywords = "Decay time constant, Liquid xenon, Scintillator",
author = "H. Takiya and K. Abe and K. Hiraide and K. Ichimura and Y. Kishimoto and K. Kobayashi and M. Kobayashi and S. Moriyama and M. Nakahata and T. Norita and H. Ogawa and H. Sekiya and O. Takachio and A. Takeda and S. Tasaka and M. Yamashita and Yang, {B. S.} and Kim, {N. Y.} and Kim, {Y. D.} and Y. Itow and R. Kegasa and K. Kobayashi and K. Masuda and K. Fushimi and K. Martens and Y. Suzuki and R. Fujita and K. Hosokawa and K. Miuchi and N. Oka and Y. Onishi and Y. Takeuchi and Kim, {Y. H.} and Lee, {J. S.} and Lee, {K. B.} and Lee, {M. K.} and Y. Fukuda and K. Nishijima and S. Nakamura and {XMASS Collaboration}, Collaboration",
note = "Funding Information: We gratefully acknowledge the cooperation of Kamioka Mining and Smelting Company. This work was supported by the Japanese Ministry of Education, Culture, Sports, Science and Technology, Grant-in-Aid for Scientific Research, JSPS KAKENHI Grant Numbers, 19GS0204 and 26104004 , and partially by the National Research Foundation of Korea Grant funded by the Korean Government ( NRF-2011–220-C00006 ). Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",
year = "2016",
month = oct,
day = "21",
doi = "10.1016/j.nima.2016.08.014",
language = "English",
volume = "834",
pages = "192--196",
journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",
issn = "0168-9002",
publisher = "Elsevier",
}