Find the approximate solid angle for a source-detector arrangement whereby a 5-cm diameterdetector is placed 30-cm from a point source which emits gammas isotropically. Formally, onewould find a solid angle by integrating sinθ dθ dφ over appropriate θ and φ limits given by thesize of the detector at the given distance from the source. However, a good approximation is touse the ratio of the detector area to the surface area of a sphere at the detector distance to findthe fraction of 4-pi which the detector covers
Find the approximate solid angle for a source-detector arrangement whereby a 5-cm diameterdetector is placed 30-cm from a point source which emits gammas isotropically. Formally, onewould find a solid angle by integrating sinθ dθ dφ over appropriate θ and φ limits given by thesize of the detector at the given distance from the source. However, a good approximation is touse the ratio of the detector area to the surface area of a sphere at the detector distance to findthe fraction of 4-pi which the detector covers
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter30: Atomic Physics
Section: Chapter Questions
Problem 14CQ: CT scanners do not detect details smaller than about 0.5 Is this limitation clue to the wavelength...
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Find the approximate solid angle for a source-detector arrangement whereby a 5-cm diameter
detector is placed 30-cm from a point source which emits gammas isotropically. Formally, one
would find a solid angle by integrating sinθ dθ dφ over appropriate θ and φ limits given by the
size of the detector at the given distance from the source. However, a good approximation is to
use the ratio of the detector area to the surface area of a sphere at the detector distance to find
the fraction of 4-pi which the detector covers
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