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Education, Training & Workforce Development
The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
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2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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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New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
P. Wälti
Nuclear Science and Engineering | Volume 36 | Number 2 | May 1969 | Pages 133-142
Technical Paper | doi.org/10.13182/NSE69-A19713
Articles are hosted by Taylor and Francis Online.
The mathematical model of age-dependent branching processes is used to describe neutron slowing down and multiplication in an infinite medium. To construct the probability measure of the neutron branching process, it is necessary to determine the probability density for a neutron of age θ(=time elapsed since birth of the fission neutron) to have energy E. This problem, which is equivalent to the time-dependent slowing down problem, is solved for a scattering law of the form v(E)Σs(E → E′)dE′ = aEµh(E′/E) (dE′/E) and an absorption cross section satisfying the relation v(E) Σa(E) = bEµ + c. In this case, it is proved that there always exist particular “invariant” probability densities suffering only contraction during ageing, i.e., having the form . For the time-dependent slowing down problem with a Greuling-Goertzel kernel, the results are compared with those of Koppel. Particular attention is paid to stationary energy spectra.
