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Conference Spotlight
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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IAEA program uses radioisotopes to protect rhinos
After two years of testing, the International Atomic Energy Agency and the University of the Witwatersrand in Johannesburg, South Africa, have begun officially implementing the Rhisotope Project, an innovative effort to combat rhino poaching and trafficking by leveraging nuclear technology.
L. S. Kothari, P. G. Khubchandani
Nuclear Science and Engineering | Volume 7 | Number 3 | March 1960 | Pages 240-244
Technical Paper | doi.org/10.13182/NSE60-A25708
Articles are hosted by Taylor and Francis Online.
Elastic and one-phonon inelastic scattering cross sections of neutrons in graphite have been calculated for neutron energy less than 2000 k0. For the lattice vibrations in graphite, the model proposed by Krumhansl and Brooks has been used. We have also calculated the mean energy loss per collision and the mean logarithmic energy decrement. Assuming that close to equilibrium the neutron distribution remains Maxwellian, the time variation of the temperature of this distribution has been calculated. The slowing down relaxation time near equilibrium comes out to nearly 170 µsec, which compares well with the experimental value of 185 ± 45 µsec.
