An apparatus for studying scintillator properties at high isostatic pressures.

We describe the design and operation of a unique hydraulic press for the study of scintillator materials under isostatic pressure. This press, capable of developing a pressure of a gigapascal, consists of a large sample chamber pressurized by a two-stage hydraulic amplifier. The optical detection of the scintillation light emitted by the sample is performed, through a large aperture optical port, by a photodetector located outside the pressure vessel. In addition to providing essential pressure-dependent studies on the emission characteristics of radioluminescent materials, this apparatus is being developed to elucidate the mechanisms behind the recently observed dependency of light-yield nonproportionality on electronic band structure. The variation of the light output of a Tl:CsI crystal under 511-keV gamma excitation and hydrostatic pressure is given as an example.

Full Text

Duke Authors

Cited Authors

  • Gaumé, RM; Lam, S; Gascón, M; Setyawan, W; Curtarolo, S; Feigelson, RS

Published Date

  • January 2013

Published In

Volume / Issue

  • 84 / 1

Start / End Page

  • 015109 -

PubMed ID

  • 23387697

Electronic International Standard Serial Number (EISSN)

  • 1089-7623

Digital Object Identifier (DOI)

  • 10.1063/1.4773563

Language

  • eng

Citation Source

  • PubMed