We present the results from the measurement of secondary cosmic gamma-ray flux using a NaI(Tl) scintillator detector during a total solar eclipse. The unique feature of this experiment is that it was carried out at a place where the solar eclipse was not observable. The total solar eclipse of August 21, 2017, was visible in most of the regions of North America during the day, whereas India, falling on the other half of the globe missed this particular eclipse. Our aim was to measure and examine if there are any variations in the secondary cosmic ray (SCR) flux at Kolkata, India due to the occurrence of the eclipse in America. Detailed experimental techniques used for this experiment are mentioned in this article. Method of data analysis and results are presented. We observe unexpected dehancement and enhancement of SCR flux in certain energy regions.

中文翻译：

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对 2017 年 8 月 21 日美国大日食期间印度次级宇宙 $\gamma $ 射线通量的研究

我们展示了在日全食期间使用 NaI(Tl) 闪烁体探测器测量二次宇宙伽马射线通量的结果。这个实验的独特之处在于它是在一个无法观测到日食的地方进行的。2017 年 8 月 21 日的日全食在白天在北美大部分地区可见，而位于地球另一半的印度则错过了这次特殊的日食。我们的目标是测量和检查印度加尔各答的二次宇宙射线 (SCR) 通量是否因美国日食的发生而发生任何变化。本文中提到了用于该实验的详细实验技术。介绍了数据分析方法和结果。