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تسجيل مستخدم جديدComment on Observation of annual modulation by $gamma$ rays from ($alpha$,$gamma$) reactions at the Soudan Underground Laboratory
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Peter Mohr
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Tiwari {it et al.} have identified an annual modulation of the $gamma$-ray flux at the Soudan Underground Laboratory which is strongly correlated to the radon concentration. The $gamma$-ray flux results from ($alpha$,$gamma$) reactions which are induced by the $alpha$ activity of radon and its daughters. Unfortunately, the quantitative analysis of the $gamma$-ray flux is based on unrealistic ($alpha$,$gamma$) cross sections, and thus the calculated $gamma$-ray fluxes are not reliable.
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Annual modulation of $gamma$ rays from ($alpha$, $gamma$) reactions in the Soudan Underground Lab has been observed using a 12-liter scintillation detector. This significant annual modulation, measured over 4 years, can mimic the signature for dark m
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