title: Simulation of a method for determining one-dimensional 137 Cs distribution using multiple gamma spectroscopic measurements with an adjustable cylindrical collimator and center shield.
abstract: With multiple in situ gamma spectroscopic measurements obtained with an adjustable cylindrical collimator and a circular shield, the arbitrary one-dimensional distribution of radioactive material can be determined. The detector responses are theoretically calculated, field measurements obtained, and a system of equations relating detector response to measurement geometry and activity distribution solved to estimate the distribution. This paper demonstrates the method by simulating multiple scenarios and providing analysis of the system conditioning.
authors.affiliation: Radiological Health Engineering Laboratory, Department of Nuclear Engineering and Radiological Sciences, University of Michigan, 2355 Bonisteel Boulevard, Ann Arbor, MI 48109-2104, USA.
authors.forename: Z D
authors.initials: ZD
authors.lastname: Whetstone
authors.forename: S C
authors.initials: SC
authors.lastname: Dewey
authors.forename: K J
authors.initials: KJ
authors.lastname: Kearfott