Development of Lanthanum Bromide and Lanthanum Chloride Scintillator Detectors for Hard X-ray Astronomy

Details Development of Lanthanum Bromide and Lanthanum Chloride Scintillator Detectors for Hard X-ray Astronomy Development of Lanthanum Bromide and Lanthanum Chloride Scintillator Detectors for Hard X-ray Astronomy

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006head....9.1825b&link_type=abstract

American Astronomical Society, HEAD meeting #9, #18.25; Bulletin of the American Astronomical Society, Vol. 38, p.385

Astronomy and Astrophysics

Astrophysics

Scientific paper

Advanced scintillator materials such as LaBr3:Ce and LaCl3:Ce hold great promise for future hard X-ray and gamma-ray astrophysics missions due to their high density, high light output, good linearity, and fast decay times. Of particular importance for future space-based imaging instruments, such as coded-aperture telescopes, are the precise spatial location of individual gamma-ray interactions and the susceptibility of the material to radiation damage. We have investigated the position and energy resolution achievable within LaBr3:Ce and LaCl3:Ce crystals (both monolithic and pixellated) using a variety of readout techniques, including position-sensitive photomultiplier tubes, multi-anode photomultiplier tubes, and orthogonal layers of wavelength-shifting fibers. We have also exposed LaBr3:Ce and LaCl3:Ce detectors to high-energy proton irradiation in order to study any radiation damage and activation. We present the results of these tests and discuss the applicability of such advanced scintillators to future high-energy imaging astrophysics missions.

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