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The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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Proving DRACO will deliver
The United States is now closer than it has been in over five decades to launching the first nuclear thermal rocket into space, thanks to DRACO—the Demonstration Rocket for Agile Cislunar Orbit.
A. Pavlik, G. Winkler, M. Uhl, A. Paulsen, H. Liskien
Nuclear Science and Engineering | Volume 90 | Number 2 | June 1985 | Pages 186-202
Technical Note | doi.org/10.13182/NSE85-A17676
Articles are hosted by Taylor and Francis Online.
Using activation techniques, the excitation functions for the 58Ni(n,2n)57Ni and 58Ni(n,np + pn + d)57Co reactions were measured in the neutron energy range from 12.7 MeV, close to the (n,2n) threshold, to 19.6 MeV with an accuracy of typically ∼4.5 and ∼6%, respectively. In the 13.4- to 14.8-MeV energy range, the accuracy achieved for the cross sections of the above reactions was typically 2 and 3%, respectively. In addition, cross sections were measured for the 58Ni(n,p)58Co reaction in the 14-MeV region with an accuracy of typically ∼2%. The experimental results were compared with calculations based on the optical model, the compound nucleus model, and the exciton model of nuclear reactions. A quite satisfactory simultaneous reproduction of all experimental data, including the proton- and alpha-production spectrum, was achieved employing a unique set of model parameters. Moreover, the new (n,2n) cross sections provide an improved data base for reactor dosimetry and spectrum unfolding applications.