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Human Factors, Instrumentation & Controls
Improving task performance, system reliability, system and personnel safety, efficiency, and effectiveness are the division's main objectives. Its major areas of interest include task design, procedures, training, instrument and control layout and placement, stress control, anthropometrics, psychological input, and motivation.
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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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Latest News
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
E. Varin, G. Samba
Nuclear Science and Engineering | Volume 151 | Number 2 | October 2005 | Pages 167-183
Technical Paper | doi.org/10.13182/NSE05-A2538
Articles are hosted by Taylor and Francis Online.
To mitigate some drawbacks of the discrete ordinates method or the even-parity approach, a new deterministic method for solving the Boltzmann transport equation is proposed. Based on a scaled least-squares formulation, the first-order transport equation is solved for a spherical harmonics expansion of the angular flux. This approach allows a continuous finite element discretization. Discrete equations have been derived for media with anisotropic scattering. Moreover, extensions are proposed to allow for solutions in three-dimensional multiplicative regions. Asymptotic analyses of this least-squares approach show the need for a scaling of the transport equation in order to maintain the diffusion limit. One-dimensional tests are used to evaluate this scaling operator, and results are compared with reference solutions. Anisotropic multigroup scattering cases are also presented. Tests on a three-dimensional simple problem show that ARTEMIS, the transport solver based on this method, gives solutions free of ray effects.