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arXiv 1306.5675physics.ins-dethep-ex
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液氩中核粒子闪烁对漂移场依赖性的观测

Observation of the Dependence of Scintillation from Nuclear Recoils in Liquid Argon on Drift Field

T. Alexander, H. O. Back, H. Cao, A. G. Cocco, F. DeJongh, G. Fiorillo, C. Galbiati, C. Ghag, L. Grandi, C. Kendziora, W. H. Lippincott, B. Loer, C. Love, L. Ma… 展开作者

T. Alexander, H. O. Back, H. Cao, A. G. Cocco, F. DeJongh, G. Fiorillo, C. Galbiati, C. Ghag, L. Grandi, C. Kendziora, W. H. Lippincott, B. Loer, C. Love, L. Manenti, C. J. Martoff, Y. Meng, D. Montanari, P. Mosteiro, D. Olvitt, S. Pordes, H. Qian, B. Rossi, R. Saldanha, W. Tan, J. Tatarowicz, S. Walker, H. Wang, A. W. Watson, S. Westerdale, J. Yoo

摘要:

我们用美国Notre Dame结构与核天体物理研究所生产的低能脉冲窄带中子束辐照双相液氩时间投影室(LAr-TPC),研究了LAr-TPC中反冲核的闪烁光产额。布置液体闪烁计数器以检测和识别LAr-TPC靶中散射的中子并选择反冲核的能量。本文报道了11 keV核反冲产生的液氩闪烁对漂移场的显著依赖性。这一观察结果很重要,因为迄今为止,对稀有液体TPC暗物质搜索灵敏度的估计是基于这样一个假设,即电场对核反冲的光产额只有很小的影响。

英文摘要:

We have exposed a dual-phase Liquid Argon Time Projection Chamber (LAr-TPC) to a low energy pulsed narrowband neutron beam, produced at the Notre Dame Institute for Structure and Nuclear Astrophysics to study the scintillation light yield of recoiling nuclei in a LAr-TPC. A liquid scintillation counter was arranged to detect and identify neutrons scattered in the LAr-TPC target and to select the energy of the recoiling nuclei. We report the observation of a significant dependence on drift field of liquid argon scintillation from nuclear recoils of 11 keV. This observation is important because, to date, estimates of the sensitivity of noble liquid TPC dark matter searches are based on the assumption that electric field has only a small effect on the light yield from nuclear recoils.

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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