title: Precise efficiency calibration of an HPGe detector: source measurements and Monte Carlo calculations with sub-percent precision.
abstract: With the goal of measuring precise gamma-ray intensities for short-lived (< 5 s) accelerator-produced activities, we have calibrated the efficiency of an HPGe detector between 53 and 1836keV to sub-percent precision with a combination of source measurements and Monte Carlo calculations. Using known or independently measured detector dimensions, we have achieved both relative and absolute agreement (the latter, to 0.1%) between the calculated and measured efficiencies with only two adjustable detector parameters, the thicknesses of the contact dead layers.
authors.affiliation: Cyclotron Institute, Texas A&M University, College Station 77843-3366, USA. hardy@comp.tamu.edu
authors.forename: J C
authors.initials: JC
authors.lastname: Hardy
authors.forename: V E
authors.initials: VE
authors.lastname: Iacob
authors.forename: M
authors.initials: M
authors.lastname: Sanchez-Vega
authors.forename: R T
authors.initials: RT
authors.lastname: Effinger
authors.forename: P
authors.initials: P
authors.lastname: Lipnik
authors.forename: V E
authors.initials: VE
authors.lastname: Mayes
authors.forename: D K
authors.initials: DK
authors.lastname: Willis
authors.forename: R G
authors.initials: RG
authors.lastname: Helmer