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arXiv 1402.2037physics.ins-detastro-ph.IMnucl-ex
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液态氩中核反冲电离产额的首次测量

First measurement of the ionization yield of nuclear recoils in liquid argon

T. H. Joshi, S. Sangiorgio, A. Bernstein, M. Foxe, C. Hagmann, I. Jovanovic, K. Kazkaz, V. Mozin, E. B. Norman, S. V. Pereverzev, F. Rebassoo, P. Sorensen

摘要:

这封信详细介绍了6.7 keV $^{40}Ar$原子在液氩探测器中停止的电离产额($Q_y$)的测量。在240- 2130 V/cm的电场范围内,探测到的$e^{-}/\mbox{keV}$的$Q_y$为3.6-6.3,这对于使用这种探测器介质来寻找来自假设的暗物质粒子相互作用和来自相干弹性中微子核散射的信号是令人鼓舞的。观察到一个显着的依赖$Q_y$上施加的电场的离子复合的上下文中解释。

英文摘要:

This Letter details a measurement of the ionization yield ($Q_y$) of 6.7 keV $^{40}Ar$ atoms stopping in a liquid argon detector. The $Q_y$ of 3.6-6.3 detected $e^{-}/\mbox{keV}$, for applied electric fields in the range 240--2130 V/cm, is encouraging for the use of this detector medium to search for the signals from hypothetical dark matter particle interactions and from coherent elastic neutrino nucleus scattering. A significant dependence of $Q_y$ on the applied electric field is observed and explained in the context of ion recombination.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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