ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
Standards Program
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!
Latest Magazine Issues
Jul 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
August 2025
Nuclear Technology
Fusion Science and Technology
July 2025
Latest News
DOE issues new NEPA rule and procedures—and accelerates DOME reactor testing
Meeting a deadline set in President Trump’s May 23 executive order “Reforming Nuclear Reactor Testing at the Department of Energy,” the DOE on June 30 updated information on its National Environmental Policy Act (NEPA) rulemaking and implementation procedures and published on its website an interim final rule that rescinds existing regulations alongside new implementing procedures.
E. L. Dorval, M. A. Arribére, S. Ribeiro Guevara
Nuclear Science and Engineering | Volume 159 | Number 2 | June 2008 | Pages 199-212
Technical Paper | doi.org/10.13182/NSE159-199
Articles are hosted by Taylor and Francis Online.
Neutron capture resonance integrals of the reactions 79Br(n, )80Brm, 79Br(n, )80Brg, 81Br(n, )82Brm, 81Br(n, )82Brg, and 81Br(n, )82Brm+g have been measured under 1-mm-thick cadmium covers inside the core of the RA-6 research reactor. The measured values are, respectively, (29.2 ± 3.1) b, (86.1 ± 8.9) b, (40.9 ± 2.3) b, (5.1 ± 1.1) b, and (46.8 ± 2.3) b. Resonance integrals of the reactions 79Br(n, )80Brm and 81Br(n, )82Brm were also measured by a direct method using the gamma ray from the isomeric transition. The results are (30.3 ± 2.6) b and (42.7 ± 4.0) b, respectively. All measured resonance integrals are referred to the standard value (1562 ± 48) b, corresponding to the reaction 197Au(n, )198Au. Spectrum unfolding with the STAY'SL code showed the 1/E behavior of the neutron energy spectrum in the epithermal range. Good agreement was found between the results of this work and others published in the literature. Perturbations of epithermal activation due to the presence of cadmium covers are discussed and corrected in the cases where differential cross-section data are available.
