Signal yields, energy resolution, and recombination fluctuations in liquid xenon
Signal yields, energy resolution, and recombination fluctuations in liquid xenon
复制标题
DOI：
10.1103/physrevd.95.012008
复制
发表时间：
2017-01-19
影响因子：
5
通讯作者：
Zhang, C.
中科院分区：
文献类型：
--
作者：
Akerib, D. S.;Alsum, S.;Zhang, C.
这项工作提出了一个分析单能电子反冲峰的暗物质搜索和校准数据从第一次地下科学运行的大型地下氙（LUX）探测器。液体氙电荷和光产额之间的电子反冲能量为5.2和661.7千电子伏的测量，以及LUX探测器在这些相同的能量的能量分辨率。此外，有一个解释现有的测量和描述的电子-离子复合波动在液体氙作为一个更一般的液体氙复合波动模型的限制情况。这些波动在单能电子反冲峰的标准偏差的测量表现出的能量存款高达661.7千电子伏，与以前的LUX测量2和16千电子伏之间的H-3的离子数的线性依赖。我们强调的相似性，在液体氙重组的电子和核反冲的重组波动与低能量校准数据测量的比较。
This work presents an analysis of monoenergetic electronic recoil peaks in the dark-matter-search and calibration data from the first underground science run of the Large Underground Xenon (LUX) detector. Liquid xenon charge and light yields for electronic recoil energies between 5.2 and 661.7 keV are measured, as well as the energy resolution for the LUX detector at those same energies. Additionally, there is an interpretation of existing measurements and descriptions of electron-ion recombination fluctuations in liquid xenon as limiting cases of a more general liquid xenon recombination fluctuation model. Measurements of the standard deviation of these fluctuations at monoenergetic electronic recoil peaks exhibit a linear dependence on the number of ions for energy deposits up to 661.7 keV, consistent with previous LUX measurements between 2 and 16 keV with H-3. We highlight similarities in liquid xenon recombination for electronic and nuclear recoils with a comparison of recombination fluctuations measured with low-energy calibration data.