Speaker
Dr
Victor Gehman
(Los Alamos National Laboraotory)
Description
A large number of current and future experiments in neutrino and dark matter detection use the scintillation light from noble elements as a mechanism for measuring energy deposition. The scintillation light from these elements is produced in the extreme ultraviolet (EUV) range, from 60 - 200 nm. Currently, the most practical technique for observing light at these wavelengths is to surround the scintillation volume with a thin film of Tetraphenyl Butadiene (TPB) to act as a fluor. The TPB film absorbs EUV photons and reemits visible photons, detectable with a variety of commercial photosensors. Here we present a measurement of the re-emission spectrum of TPB films when illuminated with 128, 160, 175, and 250 nm light. We also measure the fluorescence efficiency as a function of incident wavelength from 120 to 250 nm.
Authors
Dr
Stanley Seibert
(University of Pennsylvania)
Dr
Victor Gehman
(Los Alamos National Laboraotory)
Co-authors
Dr
Andrew Hime
(Los Alamos National Laboratory)
Mr
Daniel Moore
(Dakota State University)
Dr
Dongming Mei
(University of South Dakota)
Mr
Joel Maassen
(Dakota State University)
Dr
Keith Rielage
(Los Alamos National Laboratory)
Dr
Yongchen Sun
(University of South Dakota)
