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Conference Spotlight
2026 Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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!
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Latest News
Nuclear power’s new rule book: Managing uncertainty in efficiency, safety, and independence
The U.S. nuclear industry is standing at its most volatile regulatory moment yet—one that will shape the trajectory and the safety of the industry for decades to come. Recent judicial, legislative, and executive actions are rewriting the rules governing the licensing and regulation of nuclear power reactors. Although these changes are intended to promote and accelerate the deployment of new nuclear energy technologies, the collision of multiple legal shifts—occurring simultaneously and intersecting with profound technological uncertainties—is overwhelming the Nuclear Regulatory Commission and threatening to destabilize investor and industry expectations.
L. E. Beghian, G. H. R. Kegel, T. V. Marcella, B. K. Barnes, G. P. Couchell, J. J. Egan, A. Mittler, D. J. Pullen, W. A. Schier
Nuclear Science and Engineering | Volume 69 | Number 2 | February 1979 | Pages 191-201
Technical Paper | doi.org/10.13182/NSE79-A20610
Articles are hosted by Taylor and Francis Online.
The University of Lowell high-resolution time-of-light spectrometer has been used to measure angular distributions and 90-deg excitation functions for neutrons scattered from 238U in the energy range from 0.9 to 3.1 MeV. This study was limited to the elastic and the first two inelastic groups, corresponding to states of 238U at 45 keV (2+) and 148 keV (4+). Angular distributions were measured at primary neutron energies of 1.1, 1.9, 2.5, and 3.1 MeV for the same three neutron groups. Whereas our elastic data are in fair agreement with the evaluation in the ENDF/B-IV file, there is substantial disagreement between our inelastic measurements and the evaluated cross sections.
