Keywords
Collimators
Gamma Ray Telescopes
Energy Spectra
Atmospheric Effects
Gamma Rays
Monte Carlo Method
Electromagnetic Interactions
Radioactivity
Nuclear Interactions
Computation
Capture Effect
Astrophysics
Gamma Ray Telescopes
Energy Spectra
Atmospheric Effects
Gamma Rays
Monte Carlo Method
Electromagnetic Interactions
Radioactivity
Nuclear Interactions
Computation
Capture Effect
Astrophysics
How to Cite
Behaviour of a Lead Collimator for a Gamma-Ray Telescope exposed to Gamma Radiation in the Energy Range 1--100 MeV. (1996). Revista Mexicana De Astronomía Y Astrofísica, 32(1), 135-142. https://astronomia.unam.mx/journals/rmxaa/article/view/1996rmxaa..32..135a
Abstract
The Monte Carlo method is applied to study the transmission of a lead collimator 3 cm thick to gamma radiation in the energy range 1-100 MeV, which was part of a γ-ray telescope. The computation gives the continuum spectrum and the 511 keV line intensity emerging from the inner face of the collimator as the result of the electromagnetic interactions occurring inside it. We also discuss the resulting background from the decay of the radioactive nuclei generated by the nuclear interactions (spallation) of cosmic rays, and neutron capture in lead. The overall results show that the induced instrumental background does not significantly reduce the detector sensitivity as compared to that expected of an ideally ``clean'' collimator.Similar Articles
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