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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
2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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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October 2024
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August 2024
Latest News
New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
E. E. Lewis
Nuclear Science and Engineering | Volume 25 | Number 4 | August 1966 | Pages 359-364
Technical Paper | doi.org/10.13182/NSE66-A18554
Articles are hosted by Taylor and Francis Online.
The Dirac chord method is applied to the calculation of the escape probability of heavy charged particles from a uniform isotropic source of arbitrary convex geometry. This leads to the distribution of path lengths traveled by particles before escaping from the source. The path-length distribution, which is a function only of the Dirac chord distribution, may be used to average nuclear characteristics over the source geometry. As an illustration, the standard formula for the neutron-escape probability is reproduced. Expressions are then derived for the spectrum and energy self absorption of heavy-charged-particle sources. Specific results for spherical, slab, and cylindrical sources are obtained with the assumption that the range is proportional to an arbitrary power of the particle energy.
