A novel virtual point detector model for high purity germanium detectors. (March 2022)

• Record Type: Journal Article
• Authors: Stanga, D.; Gurau, D.; Done, L.; Luca, A.
• Is Part Of: Applied radiation and isotopes. Volume 181(2022)
• Publication Date: 2022-03
• Subjects: Gamma-ray spectrometry -- Full-energy peak efficiency -- Virtual point detector; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2022.110107
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: A novel virtual point detector model was developed for cylindrical high purity germanium detectors that are widely used in gamma-ray spectrometry. According to this model, the full energy peak efficiency response of these detectors can be computed by replacing the detector with a virtual point detector located at the center of the detector crystal. In fact, the novel model makes the transfer of the FEP efficiency response from a reference point source to a given point source, both sources being located on a line that passes through the virtual point detector. The model was tested and provided accurate results. Highlights: A novel virtual point detector model is described in this paper. The FEP efficiency response is approximated by a power function model. The novel model has a solid theoretical basis. Two computational ways were developed to apply in practice the model. This model may provide accurate values of the FEP efficiency response.