Differentiation method for Compton edge characterization in organic scintillation detectors

سال انتشار: 1399
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 221

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شناسه ملی سند علمی:

JR_RPE-1-4_002

تاریخ نمایه سازی: 22 دی 1399

چکیده مقاله:

‎It is well-known that response function of organic scintillation detectors does not appear with photopeaks‎. ‎Instead‎, ‎their dominant feature is a continuum‎, ‎usually called the Compton edge that innately exposes the resolution characteristics of detection system‎. ‎While‎, ‎accurate characterization of Compton edge is crucial for calibration purposes‎, ‎it is also in charge of elaborating the energy resolution of detector‎. ‎This paper presents a simple method for accurate characterization of the Compton edge in organic scintillation detectors‎. ‎The method is based on the fact that differentiating the response function leads to accurate estimation of the constituting functions‎. ‎The differentiation method‎, ‎in addition to the location of the Compton edge‎, ‎gives insights into the parameters of the folded Gaussian function which could lead to depict the energy resolution‎. ‎Moreover‎, ‎it is observed that the uncorrelated noise in the measurement of the response function does not impose significant uncertainties in the evaluations‎, ‎so it could preserve its functionality even in lower-quality measurements‎. ‎By simulation of the bounded electrons and considering the Doppler effects‎, ‎we are able to demonstrate‎ -‎the first ever‎- ‎estimation for intrinsic Doppler resolution of an organic plastic scintillator‎. ‎Even though‎, ‎this possibility is an immediate result of benefiting the presented method for analysis of the Compton continua‎.

نویسندگان

‎Mohammad Javad Safari

Department of Energy Engineering and Physics‎, ‎Amir Kabir University of Technology‎, ‎PO Box ۱۵۸۷۵-۴۴۱۳‎, ‎Tehran‎, ‎Iran

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