Paper
19 November 1993 Hybrid gas detector/phoswich for hard x-ray astronomy
Brian D. Ramsey, Robert A. Austin, Takahisa Minamitani, Martin C. Weisskopf, Jonathan E. Grindlay, Kenneth S. K. Lum, Raj P. Manandhar
Author Affiliations +
Abstract
A hybrid detector, which combines an optical avalanche chamber with a phoswich, is currently under development. The optical avalanche chamber--a proportional counter designed to give large quantities of light photons during charge multiplication, mounts on the front of the scintillator and gives response at low energies, while the solid scintillator takes over at energies where the gas becomes transparent (> 90 keV). Both sections of the hybrid will be read out by a common set of photomultipliers under the phoswich. The addition of the gas section to the phoswich improves the energy resolution of the instrument by a factor of 2.5 at 25 keV and the spatial resolution by a factor of 10 at the same energy. The net result is an instrument with broad band coverage and high sensitivity which will be used for coded aperture imaging on long duration balloon flights.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Brian D. Ramsey, Robert A. Austin, Takahisa Minamitani, Martin C. Weisskopf, Jonathan E. Grindlay, Kenneth S. K. Lum, and Raj P. Manandhar "Hybrid gas detector/phoswich for hard x-ray astronomy", Proc. SPIE 2006, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy IV, (19 November 1993); https://doi.org/10.1117/12.162821
Lens.org Logo
CITATIONS
Cited by 2 scholarly publications.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Sensors

Spatial resolution

Photons

Photomultipliers

Xenon

Scintillators

Crystals

RELATED CONTENT


Back to Top