Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/14322
Title: Device for mechanoluminescence excitation by applying gradually varying pressure on the sample
Authors: Rai, R K
Kher, R S
S A, Khan
Dhoble, S J
Upadhyay, A K
Keywords: Mechanoluminescence
Barium aluminate
Phosphor
Issue Date: Jul-2012
Publisher: NISCAIR-CSIR, India
Abstract: A low cost set-up has been designed and developed for producing mechanoluminescence (ML) by continuously varying pressure on the sample. The ML of γ-irradiated BaAl<sub>2</sub>O<sub>4</sub>:Eu phosphor has been studied. ML is excited impulsively by dropping a load through guiding cylinder and by applying continuously varying pressure on the sample. When BaAl<sub>2</sub>O<sub>4</sub>:Eu phosphor is deformed impulsively, a single peak with shoulder is observed in the time versus ML intensity curve, while number of peak is observed when continuously increasing pressure applied on to the sample. When pressure is continuously decreased less number of peaks is observed as compared to that of increasing pressure. The enhancement in ML intensity with <span style="mso-bidi-font-weight:bold">γ-irradiation suggests that BaAl<sub>2</sub>O<sub>4</sub>:Eu is a suitable candidate for ML dosimetry. </span>
Description: 534-537
URI: http://hdl.handle.net/123456789/14322
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.50(07) [July 2012]

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