Photon sources with minimized absorption for the calibration of semiconductor detectors

Autor:	Farid El-Daoushy, Francisco Hernández
Rok vydání:	2002
Předmět:	Physics Nuclear and High Energy Physics Range (particle radiation) Photon business.industry Detector Monte Carlo method Mass spectrometry Semiconductor detector Optics Calibration Atomic physics business Absorption (electromagnetic radiation) Instrumentation
Zdroj:	Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 488:258-261
ISSN:	0168-9002
DOI:	10.1016/s0168-9002(02)00461-8
Popis:	Homogeneous solid photon-sources for efficiency calibration of HPGe detectors in the energy range 20–60 keV, with minimized self-absorption and improved handling properties, were fabricated and tested as replacement for the most commonly used liquid and solid standards. The performance of these matrices as calibration sources was studied with three different ultra-low-background gamma spectrometry systems. Results showed reductions in self-absorption of approximately 40% and 360% at 22 keV as well as 15% and 200% at 30 keV in relation to the liquid and solid sources, respectively. The agreement between the experimental data and Monte Carlo simulations was better than 5% for the detector's efficiency even at very low energies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d81aeeaf7ec3e805ae600a6fcccdb5af https://doi.org/10.1016/s0168-9002(02)00461-8 Zobrazit plný text záznamu Full Text from ScienceDirect