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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.
Meeting Spotlight
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
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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High-temperature plumbing and advanced reactors
The use of nuclear fission power and its role in impacting climate change is hotly debated. Fission advocates argue that short-term solutions would involve the rapid deployment of Gen III+ nuclear reactors, like Vogtle-3 and -4, while long-term climate change impact would rely on the creation and implementation of Gen IV reactors, “inherently safe” reactors that use passive laws of physics and chemistry rather than active controls such as valves and pumps to operate safely. While Gen IV reactors vary in many ways, one thing unites nearly all of them: the use of exotic, high-temperature coolants. These fluids, like molten salts and liquid metals, can enable reactor engineers to design much safer nuclear reactors—ultimately because the boiling point of each fluid is extremely high. Fluids that remain liquid over large temperature ranges can provide good heat transfer through many demanding conditions, all with minimal pressurization. Although the most apparent use for these fluids is advanced fission power, they have the potential to be applied to other power generation sources such as fusion, thermal storage, solar, or high-temperature process heat.1–3
Coleridge A. Wilkins, Donald G. Thompson
Nuclear Science and Engineering | Volume 29 | Number 2 | August 1967 | Pages 244-247
Technical Paper | doi.org/10.13182/NSE67-A18533
Articles are hosted by Taylor and Francis Online.
The “infinitely dilute” resonance integral is considered in the unresolved region. The gamma-ray and fission widths are assumed constant so that the height of any resonance depends only on the resonance energy and the reduced neutron width. On the basis of this assumption, the γ'th moment of the area under the profile of an isolated resonance may be written as a combination of the integrals Any such integral may be expressed in terms of the integrals corresponding to j = 0 and j = 1, which are easily determined. Next, an expression for the γ'th moment of the resonance integral is derived for the case where resonances are scattered over an energy interval. In view of the lack of absolute unanimity among workers in this field, the derivation is performed without making any specific assumption about the level spacing distribution, allowance being made for energy dependence. From the results for an isolated resonance, this expression is capable of evaluation for any particular value of γ, once the form of the level spacing distribution has been chosen and the resonance density calculated.
