2014/11/20 by Liang Zhou, Zhou Liang, Huamin Qu +3
Earth and Planetary Sciences · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-pressure geophysics and materials #Instrumentation and Detectors (physics.ins-det) #Nuclear Physics and Applications #Radiation Detection and Scintillator Technologies #hep-ex #physics.ins-det
paper · pdf · doi:10.48550/arxiv.1411.5991
5 pages, 8 figures
openalex publication_date 2014/11/20 · arxiv created 2014/11/24 · arxiv updated 2014/11/25 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The monocrystalline silicon neutron beam window is one of the key components of neutron spectrometers and thin circular plate.Monocrystalline silicon is a brittle material and its strength is not constant but is consistent with the Weibull distribution. The window is designed not simply through the average strength, but according to the survival rate. Bending deformation is the main form of the window, so dangerous parts of the neutron beam window is stress-linearized to the combination of membrane stress and bending stress. According to the Weibull distribution of bending strength of monocrystalline silicon based on a large number of experimental data, finally the optimized neutron beam window is 1.5mm thick. Its survival rate is 0.9994 and its transmittance is 0.98447; it meets both physical requirements and the mechanical strength.