title: Gamma-ray imaging with a Si/CsI(Tl) Compton detector.
abstract: We present results from Compton imaging of gamma-ray sources using an instrument constructed from thin silicon scattering detectors and CsI(Tl) absorbing detectors. We have successfully imaged single and double point sources for several common radioactive isotopes ((137)Cs, (60)Co, (22)Na, (54)Mn). The measured angular resolution is 11.6( composite function) FWHM at 662keV. In parallel with the hardware effort, a GEANT4-based simulation code was developed. Comparisons between real and simulated data are discussed.
authors.affiliation: Los Alamos National Laboratory, Los Alamos, NM 87545, USA. ahoover@lanl.gov
authors.forename: A S
authors.initials: AS
authors.lastname: Hoover
authors.forename: J P
authors.initials: JP
authors.lastname: Sullivan
authors.forename: B
authors.initials: B
authors.lastname: Baird
authors.forename: S P
authors.initials: SP
authors.lastname: Brumby
authors.forename: R M
authors.initials: RM
authors.lastname: Kippen
authors.forename: C W
authors.initials: CW
authors.lastname: McCluskey
authors.forename: M W
authors.initials: MW
authors.lastname: Rawool-Sullivan
authors.forename: E B
authors.initials: EB
authors.lastname: Sorensen
mesh_terms: D002586:Cesium; D004867:Equipment Design; D005720:Gamma Rays; D007454:Iodides; D011834:Radiation Monitoring / Q000295:instrumentation; D012825:Silicon; D013051:Spectrometry, Gamma / Q000295:instrumentation*
chemical_list: D007454:Iodides; D002586:Cesium; C040050:cesium iodide; D012825:Silicon