Abstract

The gamma-ray background problem is known to be acute in any low-background underground experiment. The variations of this background depend on many parameters and should be taken into account when interpreting the results of experiments combined under the term “underground physics”. This paper is devoted to studying the long-term variations of the gamma-ray background in an underground laboratory with a scintillation detector based on a CsI crystal. Our studies have revealed a new effect in underground physics—a delayed nonlinear pumping effect for the gamma-ray background in an underground room that can lead to a significant rise of this background at an anomalously low atmospheric pressure.

中文翻译：

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地下物理学与伽马射线背景的非线性延迟气压效应

摘要

已知在任何低背景地下实验中，伽马射线背景问题都是严重的。这种背景的变化取决于许多参数，并且在解释“地下物理学”一词所结合的实验结果时应予以考虑。本文致力于在地下实验室中使用基于CsI晶体的闪烁探测器研究伽玛射线背景的长期变化。我们的研究揭示了地下物理学中的一种新效果-地下房间中伽马射线背景的延迟非线性泵浦效应，在异常低的大气压下，该背景可能导致该背景显着升高。