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Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
BWXT will scout potential TRISO fuel production sites in Wyoming
BWX Technologies Inc. announced today that its Advanced Technologies subsidiary has signed a cooperation agreement with the state of Wyoming to evaluate locations and requirements for siting a potential new TRISO nuclear fuel fabrication facility in the state.
Otohiko Aizawa, Keiji Kanda, Tetsuya Nozaki, Tetsuo Matsumoto
Nuclear Technology | Volume 48 | Number 2 | April 1980 | Pages 150-163
Technical Paper | Radiation | doi.org/10.13182/NT80-A32461
Articles are hosted by Taylor and Francis Online.
The remodeling of the neutron irradiation facility of the Musashi Institute of Technology Reactor (TRIGA Mark II, 100 kW) was carried out for the purpose of boron neutron capture therapy. The gamma contamination was reduced by the bismuth scatterer technique, and the thermal-neutron intensity was enlarged by virtue of the cavity effect. A 6LiF sheet was used instead of a 10B sheet for neutron collimation to minimize production of the secondary gamma rays. The characteristics of the optimized field are as follows: ɸth ≈ 1.3 × 1013 m-2· s-1 (1.3 × 109 n/cm2·s), gamma rays ≈ 1.8 × 10-6 O kg-1· s-1 (25 R/h), γ/n ≈ 0.5% in dose equivalent. When a phantom head was placed at the irradiation aperture, the neutron fluence rate (flux) and gamma-ray exposure rate increased to ∼2 × 1013 m-2 · s-1 (2 × 109 n/cm2 · s) and 1.1 × 10-5 C· kg-1 · s-1 (150 R/h), respectively, by the reflection of neutrons and capture gamma rays due to the phantom itself. The facility was licensed by the Japanese government to be used for the medical irradiation purposes on July 20, 1976.