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Low-threshold response of a scintillating xenon bubble chamber to nuclear and electronic recoils
Journal article   Open access   Peer reviewed

Low-threshold response of a scintillating xenon bubble chamber to nuclear and electronic recoils

E. Alfonso-Pita, E. Behnke, M. Bressler, B. Broerman, K. Clark, R. Coppejans, J. Corbett, M. Crisler, C. E. Dahl, K. Dering, …
Physical review. D, v 111(3), 032002
Feb 2025
url
http://arxiv.org/abs/2410.07241View

Abstract

<p>A device filled with pure xenon first demonstrated the ability to operate simultaneously as a bubble chamber and scintillation detector in 2017. Initial results from data taken at thermodynamic thresholds down to 4keV showed sensitivity to 20 keV nuclear recoils with no observable bubble nucleation by gamma-ray interactions. This paper presents results from further operation of the same device at thermodynamic thresholds as low as 0.50 keV, hardware limited. The bubble chamber has now been shown to have sensitivity to 1 keV nuclear recoils while remaining insensitive to bubble nucleation by gamma-rays. A data- driven calibration of the chamber's nuclear recoil nucleation response, as a function of nuclear recoil energy and thermodynamic state, is presented. Stringent upper limits are established for the probability of bubble nucleation by gamma-ray-induced Auger cascades, with a limit of < 1.1 x 10(-6) set at 0.50 keV, the lowest thermodynamic threshold explored.</p>

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Astronomy & Astrophysics
Physics, Particles & Fields
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