Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aipc..232..489m&link_type=abstract
IN: Gamma-ray line astrophysics; Proceedings of the International Symposium, Paris, France, Dec. 10-13, 1990 (A92-43619 18-90).
Astronomy and Astrophysics
Astrophysics
Computerized Simulation, Gamma Ray Observatory, Monte Carlo Method, Point Sources, Radiation Detectors, Background Radiation, Galactic Nuclei, Signal To Noise Ratios, X Ray Sources
Scientific paper
For the gamma-ray satellite Integral, a 3D position-sensitive imaging detector has been proposed. The instrument is based on a two layer CsI(Tl) device coupled with a coded aperture mask placed at about 4 m from the detector. This particular configuration of discrete detection elements, together with the 3D position sensitivity will ensure good imaging capabilities throughout a large energy range from 40-50 keV up to about 20-30 MeV. The imager will also have spectroscopy capability in the nuclear line region. This paper presents the first Monte Carlo simulation results regarding the reconstruction of the shadowgram of the mask pattern. A simulated image of a 511 keV Galactic center point source is presented for both the low and the high state.
Bird Andrew J.
Caroli Ezio
Dean Anthony J.
Di Cocco Guido
Malaguti Giuseppe
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