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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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Nuclear News 40 Under 40 discuss the future of nuclear
Seven members of the inaugural Nuclear News 40 Under 40 came together on March 4 to discuss the current state of nuclear energy and what the future might hold for science, industry, and the public in terms of nuclear development.
To hear more insights from this talented group of young professionals, watch the “40 Under 40 Roundtable: Perspectives from Nuclear’s Rising Stars” on the ANS website.
Steve Kahn, Randall Harman, Vernon Forgue
Nuclear Science and Engineering | Volume 23 | Number 1 | September 1965 | Pages 8-20
Technical Paper | doi.org/10.13182/NSE65-A19254
Articles are hosted by Taylor and Francis Online.
Energy spectra were obtained experimentally for fission fragments escaping from backed films of enriched uranium dioxide that were less than 11 µm thick. The data were reduced to give values for the relative average escape energies (R), escape fractions (S) and energy deposition efficiencies (D). A mathematical model was developed to synthesize these results using a Monte-Carlo-type computer code. This code included the fission-fragment masses, yields, and initial energies, the experimental source-detector geometry, a range-energy relationship, an energy-loss relationship and a function for the pulse-height defect in surface-barrier detectors. Various functions for these last three parameters were used in combination to obtain results that duplicated the experimental spectra and R, S and D values. The agreement was obtained with range proportional to (energy)1/2, the square energy-loss function, and pulse-height defect = A (E) (M-B), where A and B are constants and E and M are energy and mass, respectively. The experimental detection functions were removed from the code, and the spectra and R, S and D values were calculated for a 2π geometry. These values agreed well with those calculated using weighted averages for range and initial energy.