کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8166587 1526238 2018 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fast neutron detection at near-core location of a research reactor with a SiC detector
ترجمه فارسی عنوان
تشخیص سریع نوترون در محل نزدیک هسته ی یک راکتور تحقیقاتی با یک آشکارساز سی
کلمات کلیدی
کاربید سیلیکون، درجه حرارت بالا، سریع نوترون تابش نزدیکی هسته، راکتور تقسیم،
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم ابزار دقیق
چکیده انگلیسی
The measurable charged-particle produced from the fast neutron interactions with the Si and C nucleuses can make a wide bandgap silicon carbide (SiC) sensor intrinsically sensitive to neutrons. The 4H-SiC Schottky detectors have been fabricated and tested at up to 500 °C, presenting only a slightly degraded energy resolution. The response spectrum of the SiC detectors were also obtained by exposing the detectors to external neutron beam irradiation and at a near-core location where gamma-ray field is intense. The fast neutron flux of these two locations are ∼4.8×104cm−2⋅s−1 and ∼2.2×107cm−2⋅s−1, respectively. At the external beam location, a Si detector was irradiated side-by-side with SiC detector to disjoin the neutron response from Si atoms. The contribution of gamma ray, neutron scattering, and charged-particles producing reactions in the SiC was discussed. The fast neutron detection efficiencies were determined to be 6.43×10−4 for the external fast neutron beam irradiation and 6.13×10−6 for the near-core fast neutron irradiation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 888, 21 April 2018, Pages 126-131
نویسندگان
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