کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9818362 | 1518779 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study on prompt gamma-ray spectrometer using Compton suppression system
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
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چکیده انگلیسی
The performance of the prompt gamma-ray activation analysis (PGAA) facility was improved by a series of modifications to the making composition of a Compton suppression system at HANARO, the 24 MW research reactor in the Korea Atomic Energy Research Institute. An adjustment of the crystal was made by various efforts to obtain most suitable condition for the diffracted beam, the neutron flux was increased by 20% at the sample position to 8.4 Ã 107 n cmâ2 sâ1, and the Compton suppression ratio was 4.3-5 times below the Compton continuum region that appeared near the sample of interest such as boron. The PGAA facility at the HANARO research reactor serves as a major analytical tool for quantifying light elements in biological, geological and food samples. The sensitivity of boron is 1468 cps/mg which is obtained from the slope of the boron peak count rate versus the boron mass. For the low background conditions, a supplement to the shielding materials on the detection assembly was made and the path of the beam line reduced the background count rate, which was evaluated from the boron data using the Compton- and single-mode. From this Compton suppressed gamma-ray spectrometer, we obtained high quality spectroscopic data from thermal neutron capture.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 229, Issues 3â4, April 2005, Pages 499-507
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 229, Issues 3â4, April 2005, Pages 499-507
نویسندگان
Hyun-Je Cho, Yong-Sam Chung, Young-Jin Kim,