The scintillation efficiency of sodium and iodine recoils in a NaI(Tl) detector for dark matter searches
The scintillation efficiency of sodium and iodine recoils in a NaI(Tl) detector for dark matter searches
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DOI：
10.1016/0370-2693(94)90343-3
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发表时间：
1994-01
影响因子：
4.4
通讯作者：
N. Spooner;G. Davies;J. Davies;G. J. Pyle;T. Bucknell;G. Squier;J. D. Lewin;P. Smith
中科院分区：
文献类型：
--
作者：
N. Spooner;G. Davies;J. Davies;G. J. Pyle;T. Bucknell;G. Squier;J. D. Lewin;P. Smith
寻找可能构成银河系暗物质的弱相互作用的大质量粒子，可以基于对NaI(Tl)闪烁探测器中核反冲事件的探测。为此，有必要知道核反冲事件的相对闪烁效率。本文给出了NaI(Tl)中低能I和Na核反冲事件转换为闪烁光效率的测量结果。实验使用的是能量为3.2-5.5 MeV的单能中子的弹性散射。Na反冲的相对闪烁效率约为30%，降至15keV；I反冲的相对闪烁效率约为8%，降至27keV。
Searches for weakly interacting massive particles that may constitute the Galactic dark matter can be based on the detection of nuclear recoil events in NaI(Tl) scintillation detectors. For this purpose it is necessary to know the relative scintillation efficiency for nuclear recoil events. Presented here are the results of measurements of the efficiency for conversion of low energy I and Na nuclear recoil events into scintillation light in NaI(Tl). The experiments were performed using elastic scattering of monoenergetic neutrons of energy 3.2–5.5 MeV. The relative scintillation efficiency was found to be about 30% for Na recoils, down to 15 keV, and 8% for I recoils, down to 27 keV.