Pixellated NaI (Tl) Detector for Light Yield Nonproportionality Investigation

Autor:	J.C. Lund, Wondwosen Mengesha, Nathaniel Bowden, Matthew S. Allen
Rok vydání:	2007
Předmět:	Physics Nuclear and High Energy Physics Photon business.industry Detector Resolution (electron density) Scintillator Optics Delta ray Nuclear Energy and Engineering Sampling (signal processing) Scintillation counter Deconvolution Electrical and Electronic Engineering business
Zdroj:	IEEE Transactions on Nuclear Science. 54:1830-1835
ISSN:	1558-1578 0018-9499
Popis:	An 8 × 8 pixellated Nal(Tl) detector (1.7 cm × 1.7 cm × 1.0 cm) coupled to a multi anode PMT read out system was modeled to study the impact of light yield nonproportionality due to multiple photon scatterings and assess the contribution of delta rays in Nal(Tl) energy resolution. Geant4 simulation tool with modified nonproportional optical photons sampling routine was used in the study. A deconvolution technique was implemented to allow decoupling of the multiple photon scatterings contribution from the total energy resolution. Results from the simulation demonstrated that the effect of nonproportionality due to multiple photon scatterings is too small to be observed. However, the contribution of the delta rays was found to be a significant component of the evaluated Nal(Tl) energy resolution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::60f2f64cc0bff41b5a2a469ac3827074 https://doi.org/10.1109/tns.2007.905161 Zobrazit plný text záznamu