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arXiv · 1011.1012

Scintillation of thin tetraphenyl butadiene films under alpha particle excitation

Tina Pollmann·Mark Boulay·Marcin Kuźniak
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Abstract

The alpha induced scintillation of the wavelength shifter 1,1,4,4-tetraphenyl-1,3-butadiene (TPB) was studied to improve the understanding of possible surface alpha backgrounds in the DEAP dark matter search experiment. We found that vacuum deposited thin TPB films emit 882 +/-210 photons per MeV under alpha particle excitation. The scintillation pulse shape consists of a double exponential decay with lifetimes of 11 +/-5 ns and 275 +/-10ns.

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Tina Pollmann, Mark Boulay, Marcin Kuźniak. 2010-11-03. Scintillation of thin tetraphenyl butadiene films under alpha particle excitation. https://doi.org/10.1016/j.nima.2011.01.045

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