کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8174017 | 1526348 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Bismuth- and lithium-loaded plastic scintillators for gamma and neutron detection
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Transparent plastic scintillators based on polyvinyltoluene (PVT) have been fabricated with high loading of bismuth carboxylates for gamma spectroscopy, and with lithium carboxylates for neutron detection. When activated with a combination of standard fluors, 2,5-diphenyloxazole (PPO) and tetraphenylbutadiene (TPB), gamma light yields with 15Â wt% bismuth tripivalate of 5000Â Ph/MeV are measured. A PVT plastic formulation including 30Â wt% lithium pivalate and 30Â wt% PPO offers both pulse shape discrimination, and a neutron capture peak at ~400Â keVee. In another configuration, a bismuth-loaded PVT plastic is coated with ZnS(6Li) paint, permitting simultaneous gamma and neutron detection via pulse shape discrimination with a figure-of-merit of 3.8, while offering gamma spectroscopy with energy resolution of R(662Â keV)=15%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 778, 1 April 2015, Pages 126-132
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 778, 1 April 2015, Pages 126-132
نویسندگان
Nerine J. Cherepy, Robert D. Sanner, Patrick R. Beck, Erik L. Swanberg, Thomas M. Tillotson, Stephen A. Payne, Charles R. Hurlbut,