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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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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.”
Helmut Jacobs
Nuclear Technology | Volume 71 | Number 1 | October 1985 | Pages 131-144
Technical Paper | Fusion | doi.org/10.13182/NT85-A33715
Articles are hosted by Taylor and Francis Online.
Modifications of Rayleigh-Taylor instability growth by a gradual density increase instead of a step increase, finite fluid thickness, convection (or ablation), three-dimensional disturbances, nearby stable stratification or fixed boundaries, and nonlinear saturation are quantitatively assessed in typical model cases. To account for gradual density transitions, novel approximate but conservative correlations are given that can replace a hitherto widely used incorrect relation. The stabilizing effects of stable stratification, a fixed boundary (below), and a free surface (above) close to the instability zone are discussed in detail for the first time. For the effect of convection a new and simple derivation of Bodner’s formula is presented, which reveals that the formula describes a fictitious effect due to observation of the disturbance at a moving location. A half-analytical procedure is proposed that allows an account at the same time for several effects resulting from the actual density profile and the possible variations of this profile and its acceleration with time, for example, during ablative acceleration of thin foils.
