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Division Spotlight
Radiation Protection & Shielding
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.
Meeting Spotlight
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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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February 2025
Latest News
Investment bill would provide funding options for energy projects
Coons
Moran
The bipartisan Financing Our Futures Act, which expands certain financing tools to all types of energy resources and infrastructure projects, was reintroduced to the U.S. Senate on February 20 by Sens. Jerry Moran (R., Kan.) and Chris Coons (D., Del.).
Via amendment to the Internal Revenue Code, the legislation would allow advanced nuclear energy projects to form as master limited partnerships (MLPs), a tax structure currently available only to traditional energy projects.
An MLP is a business structure that is taxed as a partnership but the ownership interests of which are traded like corporate stock on a market. Until the Internal Revenue Code is amended, MLPs will continue to be available only to investors in energy portfolios for oil, natural gas, coal extraction, and pipeline projects that derive at least 90 percent of their income from these sources. This change would take effect on January 1, 2026.
T. D. Märk, M. Pahl, R. Vartanian
Nuclear Technology | Volume 52 | Number 2 | February 1981 | Pages 295-305
Technical Paper | Technique | doi.org/10.13182/NT81-A32672
Articles are hosted by Taylor and Francis Online.
Annealing characteristics of spontaneous (fossil) and induced (recent) fission tracks in sphene were measured in a temperature range of 873 to 768 K. Results include the reduction of number density, maximum track length (horizontal projection), and average track length (horizontal projection) as a function of annealing time [up to 1.5-107 s (175 days)]. Using the track dimension method, a corrected fission track age for sphene was derived. The annealing characteristics are interpreted by means of a new annealing model, yielding information about the elementary processes governing the annealing mechanism for the etchable zone of fission tracks. Monomolec-ular recombination and the annealing of dislocation loops are proposed as the likely dominant annealing processes. Annealing coefficients α(T) obtained from the number density annealing characteristics under the assumption of a single exponential function approximation are used to derive an age-temperature relationship giving for a measured corrected fission track age in sphene the corresponding temperature . This age-temperature relationship of sphene is compared with the age-temperature relationship of apatite.
