Title :
Improving the energy resolution of high-pressure Xe cylindrical ionization chambers
Author :
Bolotnikov, Aleksey ; Ramsey, Brian
Author_Institution :
NASA Marshall Space Flight Center, Huntsville, AL, USA
fDate :
6/1/1997 12:00:00 AM
Abstract :
Results are presented on the development of high-pressure (>50 atm) Xe cylindrical ionization chambers for hard X-ray and low energy gamma-ray astronomy. Two methods to improve the energy resolution of these devices have been tested. One uses a shielding mesh and the other employs no mesh but substitutes a rise-time correction. Both techniques can give similar resolutions, with 2.2% FWHM being measured at 662 keV and 2.4% at 511 keV
Keywords :
X-ray astronomy; X-ray detection; astronomical instruments; gamma-ray astronomy; gamma-ray detection; ionisation chambers; shielding; xenon; 511 keV; 662 keV; Xe; energy resolution improvement; hard X-ray astronomy; high-pressure cylindrical ionization chambers; low energy gamma-ray astronomy; rise-time correction; shielding mesh; Aluminum; Cathodes; Ceramics; Electrodes; Electronic equipment testing; Energy resolution; Flanges; Ionization chambers; Preamplifiers; Spectroscopy;
Journal_Title :
Nuclear Science, IEEE Transactions on
