کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10716548 | 1027566 | 2005 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Application of non-monoenergetic sources in fast neutron scattering measurements
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
When the quasi-monoenergetic DD neutron source is used in scattering experiments, the scattering fractions of monoenergetic and continuous breakup neutrons are superimposed at low neutron energies. In order to extend the data analysis to this energy region, the two fractions have to be separated. The separation can be achieved with an “abnormal” scattering geometry, i.e. a long distance between target and sample (more than 2Â m) and a short flight path between sample and detector (below 1Â m). Another possibility is the use of a “normal” scattering geometry, i.e. a short distance between target and sample (below 20Â cm) and a long flight path (12Â m), and a separation of the two scattering fractions by a complete Monte Carlo simulation. The advantages and shortcomings of the two methods are discussed in detail. Double-differential cross-sections of vanadium measured at similar energies around 10.2Â MeV and determined by the two different methods are compared and discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 545, Issue 3, 21 June 2005, Pages 658-682
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 545, Issue 3, 21 June 2005, Pages 658-682
نویسندگان
Dankwart Schmidt, Zhou Zuying, Ruan Xichao, Tang Hongqing, Qi Bujia, Xia Haihong, Deng Jianrong,