کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8166700 1526239 2018 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of a lithium fluoride zinc sulfide based neutron multiplicity counter
ترجمه فارسی عنوان
توسعه ناقل چندتایی بر پایه سولفید روی لیتیم فلوراید
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم ابزار دقیق
چکیده انگلیسی
The feasibility of a full-scale lithium fluoride zinc sulfide (LiF/ZnS) based neutron multiplicity counter has been demonstrated. The counter was constructed of modular neutron detecting stacks that each contain five sheets of LiF/ZnS interleaved between six sheets of wavelength shifting plastic with a photomultiplier tube on each end. Twelve such detector stacks were placed around a sample chamber in a square arrangement with lithiated high-density polyethylene blocks in the corners to reflect high-energy neutrons and capture low-energy neutrons. The final system design was optimized via modeling and small-scale test. Measuring neutrons from a 252Cf source, the counter achieved a 36% neutron detection efficiency (ϵ) and an 11.7μs neutron die-away time (τ) for a doubles figure-of-merit (ϵ2∕τ) of 109. This is the highest doubles figure-of-merit measured to-date for a 3He-free neutron multiplicity counter.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 887, 11 April 2018, Pages 59-63
نویسندگان
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