Sound and light from fractures in scintillators

Prompted by intriguing events observed in certain particle-physics searches for rare events, we study light and acoustic emission simultaneously in some inorganic scintillators subject to mechanical stress. We observe mechanoluminescence in \({Bi}_4{Ge}_{3}{O}_{12}\), \({CdWO}_{4}\) and \({ZnWO}_{4}...

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Bibliographic Details
Published in:arXiv.org 2013-10
Main Authors: Tantot, A, Santucci, S, Ramos, O, Deschanel, S, M -A Verdier, Mony, E, Wei, Y, Ciliberto, S, Vanel, L, P C F Di Stefano
Format: Article
Language:English
Subjects:
Acoustic emission
Emission analysis
Fractures
Light emission
Lower bounds
Mechanoluminescence
Pressure
Scintillation counters
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Summary:Prompted by intriguing events observed in certain particle-physics searches for rare events, we study light and acoustic emission simultaneously in some inorganic scintillators subject to mechanical stress. We observe mechanoluminescence in \({Bi}_4{Ge}_{3}{O}_{12}\), \({CdWO}_{4}\) and \({ZnWO}_{4}\), in various mechanical configurations at room temperature and ambient pressure. We analyze how the light emission is correlated to acoustic emission during fracture. For \({Bi}_4{Ge}_{3}{O}_{12}\), we set a lower bound on the energy of the emitted light, and deduce that the fraction of elastic energy converted to light is at least \(3 \times 10^{-5}\).
ISSN:2331-8422
DOI:10.48550/arxiv.1305.3644