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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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Deep Space: The new frontier of radiation controls
In commercial nuclear power, there has always been a deliberate tension between the regulator and the utility owner. The regulator fundamentally exists to protect the worker, and the utility, to make a profit. It is a win-win balance.
From the U.S. nuclear industry has emerged a brilliantly successful occupational nuclear safety record—largely the result of an ALARA (as low as reasonably achievable) process that has driven exposure rates down to what only a decade ago would have been considered unthinkable. In the U.S. nuclear industry, the system has accomplished an excellent, nearly seamless process that succeeds to the benefit of both employee and utility owner.
J. K. Dickens, F. G. Perey
Nuclear Science and Engineering | Volume 40 | Number 2 | May 1970 | Pages 283-293
Technical Paper | doi.org/10.13182/NSE70-A19689
Articles are hosted by Taylor and Francis Online.
We have obtained gamma-ray spectra for the reactions 16O(n,n′γ)16O and 16O(n,αγ)13C for incident-mean-neutron energies En between 6.7 and 11.0 MeV. The gamma rays were detected using a 30 cm3 coaxial Ge(Li) detector placed at 55 and 90 deg with respect to the incident-neutron direction. Time-of-flight electronics was used with the gamma-ray detector to discriminate against unwanted pulses due to neutrons and background gamma radiation. Two samples of 75 and 31 gm of BeO in the form of right circular cylinders were used. The incident-neutron beam was produced by bombarding a deuterium-filled gas cell with a pulsed deuteron beam of appropriate energy; for En ≤ 8.5 MeV the deuteron beam was obtained from the ORNL 6-MV Van de Graaff, and for En ≥ 8.5 MeV it was obtained from the ORNL Tandem Van de Graaff. These data have been reduced to differential cross sections for production of gamma rays from 16O. The cross sections have been compared, where possible, with previously measured values with reasonable agreement. However, there are several important differences, and these are discussed. Summing the partial cross sections yields values for the total nonelastic cross section which are in good agreement with values for the nonelastic cross section obtained from the difference between the total cross section and the total elastic cross section.
