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Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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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Commercial nuclear innovation "new space" age
In early 2006, a start-up company launched a small rocket from a tiny island in the Pacific. It exploded, showering the island with debris. A year later, a second launch attempt sent a rocket to space but failed to make orbit, burning up in the atmosphere. Another year brought a third attempt—and a third failure. The following month, in September 2008, the company used the last of its funds to launch a fourth rocket. It reached orbit, making history as the first privately funded liquid-fueled rocket to do so.
G. D. Hickman, W. B. Leng
Nuclear Science and Engineering | Volume 12 | Number 4 | April 1962 | Pages 523-531
Technical Paper | doi.org/10.13182/NSE62-A26101
Articles are hosted by Taylor and Francis Online.
A set of effective cutoff energies for 1/v detectors covered by cadmium, samarium, and gadolinium filters is presented. These cutoff energies have been calculated for both isotropic and beam fluxes which were made up of a Maxwellian thermal plus a 1/E tail. Calculations were performed as a function of r (the ratio of thermal flux to the resonance flux per unit lethargy), EM (the Maxwellian neutron energy), and the absorption coefficients of the 1/v foil and the resonance filter. The cutoff energies for samarium were found to be appreciably lower than those for cadmium, while those for gadolinium, especially for thicknesses of 30 to 40 mils, are similar to those of cadmium. It is felt that these rare earth filters might be able to supply valuable information in the region of low cutoff energies, especially in high temperature facilities where cadmium with its low melting point is difficult to use.