نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه فیزیک هستهای، دانشکده فیزیک، دانشگاه دامغان، صندوق پستی: 41167-31716، دامغان - ایران
2 گروه فیزیک، دانشکده علوم، دانشگاه بیرجند، صندوق پستی: 615-97175، بیرجند - ایران
کلیدواژهها
عنوان مقاله English
نویسندگان English
In this study, the design and construction of the neutron velocity selector were investigated. Theoretical and experimental studies have shown that it is preferable to construct the blades and the main shaft of the device from carbon fibers to reduce weight, prevent imbalance, and improve performance at high speeds. After designing the other components of the device, manufacturing the parts, and assembling the device, the vacuum system was tested, measuring a vacuum pressure of 3×10-2 millibars. In the next phase, the device was mechanically tested at various speeds between 3000 and 11000 rpm, confirming the mechanical stability of the device. The measurement of selected thermal neutrons was carried out using neutrons from a 252Cf source. The experimental results show that this device is suitable for measuring the energy of neutrons in the range of less than 0.001 eV. This device requires a high-speed motor with a rotational speed of approximately 35,000 rpm and a high-resolution encoder to allow the passage of thermal neutrons with an energy of 0.025 eV, in order to reduce the error in time-of-flight measurements to an acceptable level.
کلیدواژهها English
17. Lin C.M. Parameter optimisation of a vacuum plasma spraying process using boron carbide. Journal of Thermal Spray Technology. 2012 Sep;21:873-81.