title: Directional detector of gamma ray sources.
abstract: This work describes the design, development, and characterization of an ionization chamber to detect and locate gamma ray sources with intensities down to 100 mu Gy h(-1). The results show that sources of x ray and gamma radiation in the energy range of 14 to 1,250 keV can be located. The directional sensitivity of this type of monitor is dependent on several parameters, such as photon energy, intensity, and the degree of complexity in terms of the number and type of sources in a contaminated area. An application important to the Army is to identify hotspots in a contaminated area and thereby indicate to personnel safer paths around them. Another possible use for this type of monitor may be in security applications in the prevention of shipping or storing clandestine sources.
authors.affiliation: NBC Defense Systems, RADIAC Project Office, Attn: AMCPM-NNN-F, Fort Monmouth, NJ 07703-5211, USA.
authors.forename: S
authors.initials: S
authors.lastname: Kronenberg
authors.forename: G J
authors.initials: GJ
authors.lastname: Bruckner
authors.forename: E
authors.initials: E
authors.lastname: Bechtel
authors.forename: F
authors.initials: F
authors.lastname: Gentner
mesh_terms: D005720:Gamma Rays; D011874:Radiometry / Q000295:instrumentation*