tailieunhanh - Properties and Applications of Silicon Carbide Part 11

Tham khảo tài liệu 'properties and applications of silicon carbide part 11', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 292 Properties and Applications of Silicon Carbide Fig. 16. Comparison of predicted Gaussian Representation and Measured Raw Data SiC detector responses. Data reprinted from Franceschini et al. 2009 with permission from the Editorial Department of World Publishing Company Pte. Ltd. 6. Discussion and Conclusions Silicon carbide neutron detectors are ideally suited for nuclear reactor applications where high-temperature high-radiation environments are typically encountered. Among these applications are reactor power-range monitoring Ruddy et al. 2002 . Fast-neutron fluences at ex-core reactor power-range monitor locations are approximately 1017 n cm-2. Semiconductor detectors such as those based on Si or Ge cannot withstand such high fastneutron fluences and would be unsuitable for this application. Epitaxial SiC detectors have been shown to operate at temperatures up to 375 C Ivanov et al. 2009 . Temperatures do not exceed 350 C in conventional and advanced pressurized water reactor designs. Therefore SiC neutron detectors should prove useful for applications in these environments. SiC neutron detectors can potentially be used in reactor monitoring locations with temperatures up to 700 C Babcock et al. 1957 Babcock Chang 1963 . Such temperatures can be encountered in advanced gas-cooled or liquid-metal cooled reactors. At such temperatures the long-term integrity of the detector contacts is the key issue rather than the performance of the SiC semiconductor. Other potential reactor monitoring applications are in-vessel neutron detectors Ruddy et al. 2002 monitoring in proposed advanced power reactors Petrovic et al. 2003 and monitoring of reactors aboard outer space vehicles Ruddy et al. 2005 . Silicon Carbide Neutron Detectors 293 SiC detectors have also been used to monitor neutron exposures in Boron-Capture Neutron Therapy Manfreddoti et al. 2005 as well as the thermal-neutron fluence rates in promptgamma neutron activation of waste drums Dulloo et al. 2004 . SiC

TỪ KHÓA LIÊN QUAN
crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.