An apparatus for studying scintillator properties at high isostatic pressures

作者：Gaume R M^*; Lam S; Gascon M; Setyawan W; Curtarolo S; Feigelson R S

来源：Review of Scientific Instruments, 2013, 84(1): 015109.

DOI：10.1063/1.4773563

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.

• 出版日期2013-1