Sound and light from fractures in scintillators.
Phys Rev Lett
; 111(15): 154301, 2013 Oct 11.
Article
em En
| MEDLINE
| ID: mdl-24160603
ABSTRACT
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 Bi4Ge3O12, CdWO4, and ZnWO4, in various mechanical configurations at room temperature and ambient pressure. We analyze the temporal and amplitude correlations between the light emission and the acoustic emission during fracture. A novel application of the precise energy calibration of Bi4Ge3O12 provided by radioactive sources allows us to deduce that the fraction of elastic energy converted to light is at least 3×10(-5).
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article