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Division Spotlight
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
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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Candidates for leadership provide statements: ANS Board of Directors
With the annual ANS election right around the corner, American Nuclear Society members will be going to the polls to vote for a vice president/president-elect, treasurer, and members-at-large for the Board of Directors. In January, Nuclear News published statements from candidates for vice president/president-elect and treasurer. This month, we are featuring statements from each nominee for the Board of Directors.
R. L. Brehm, D. L. Hetrick, T. R. Schmidt
Nuclear Technology | Volume 7 | Number 2 | August 1969 | Pages 117-127
Reactor | doi.org/10.13182/NT69-A28355
Articles are hosted by Taylor and Francis Online.
The stability requirements of in-core thermionic reactor concepts are examined analytically, utilizing an approximate two-region description of the fueled diode. General stability requirements for the model are derived and then evaluated for possible ranges of design considerations with regard to operating power-density levels, diode dimensions and materials, and fuel materials. The stability of this type of reactor is shown to be only weakly dependent on design considerations provided the static power coefficient is negative. The reactor is sluggish in its response to reactivity or load perturbations, the response time to reattain equilibrium being of the order of minutes. A comparison between the approximate stability criterion and the corresponding criterion obtained from a detailed analog-computer simulation of a specific reactor concept indicates the approximate criterion is conservative, as postulated.
