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Young Members Group
The Young Members Group works to encourage and enable all young professional members to be actively involved in the efforts and endeavors of the Society at all levels (Professional Divisions, ANS Governance, Local Sections, etc.) as they transition from the role of a student to the role of a professional. It sponsors non-technical workshops and meetings that provide professional development and networking opportunities for young professionals, collaborates with other Divisions and Groups in developing technical and non-technical content for topical and national meetings, encourages its members to participate in the activities of the Groups and Divisions that are closely related to their professional interests as well as in their local sections, introduces young members to the rules and governance structure of the Society, and nominates young professionals for awards and leadership opportunities available to members.
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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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Latest News
Can hydrogen be the transportation fuel in an otherwise nuclear economy?
Let’s face it: The global economy should be powered primarily by nuclear power. And it probably will by the end of this century, with a still-significant assist from renewables and hydro. Once nuclear systems are dominant, the costs come down to where gas is now; and when carbon emissions are reduced to a small portion of their present state, it will become obvious that most other sources are only good in niche settings. I mean, why use small modular reactors to load-follow when they can just produce that power instead of buffering it?
R. S. Modak, Anurag Gupta
Nuclear Science and Engineering | Volume 163 | Number 3 | November 2009 | Pages 263-271
Technical Paper | doi.org/10.13182/NSE163-263
Articles are hosted by Taylor and Francis Online.
This paper deals with the numerical evaluation of fundamental- and higher-mode solutions of the well-known K-eigenvalue problem in nuclear reactor physics using neutron transport theory. If the spatial domain has a plane of reflective symmetry, it is customary to find the fundamental K-mode by considering only the half-domain on one side of the plane for the calculation and applying a reflective boundary condition (RBC) on the plane of symmetry. Here, it is shown that the higher antisymmetric K-mode can also be evaluated in a similar way by applying what is called here the anti-RBC (ARBC) on the plane of symmetry. ARBC was implemented in computer codes based on the discrete ordinates method in Cartesian geometry for some sample problems and was found to work well. The implementation of ARBC in existing codes, although very easy, does not seem to be widely used or reported in the literature. For a one-dimensional homogeneous slab with isotropic scattering, the first antisymmetric K-mode found using ARBC is equivalent to the fundamental mode of a sphere, apart from a scaling factor for the total flux. An interesting result is that the fundamental mode of a sphere computed in this way does not contain the unphysical flux dip near the center, commonly obtained by the discrete ordinates codes in spherical geometry. Although not shown here, it appears that ARBC can be implemented in Monte Carlo codes also to find antisymmetric modes.