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Systematic analysis of low-energy 7Be decay spectra in superconducting quantum sensors under the study of electron shaking effects

Nuñez, Sergio
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2023-11
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Reuleaux 2023
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2023_Reuleaux_Sergio_Nunez_pp6-13.pdf
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https://hdl.handle.net/11124/178540
 https://doi.org/10.25676/11124/178540
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Abstract
In the present article, we report the systematic analysis of the low energy Beryllium-7 (7Be) nuclear electron capture decay spectra for different pixels in the BeEST experiment under the study of the Electron Shaking Effect (ESE). This analysis was performed fixing the ESE probability, known as Shaking Probability (SP), in the L-capture peak from 5% to 30% and then running the BeEST analysis code. We found a fitting consistency between both pixels at 15% of SP, which is in agreement with previous BeEST spectrum analysis works, but with discrepancies in the modeling and fitting parameters (χ2v = 1.83 for pixel 4 and χ2v = 1.85 for pixel 5). Discrepancies are discussed to improve modeling and fitting methods for next BeEST phases.
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