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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
Meeting Spotlight
Conference on Nuclear Training and Education: A Biennial International Forum (CONTE 2025)
February 3–6, 2025
Amelia Island, FL|Omni Amelia Island Resort
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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How to talk about nuclear
In your career as a professional in the nuclear community, chances are you will, at some point, be asked (or volunteer) to talk to at least one layperson about the technology you know and love. You might even be asked to present to a whole group of nonnuclear folks, perhaps as a pitch to some company tangential to your company’s business. So, without further ado, let me give you some pointers on the best way to approach this important and surprisingly complicated task.
Thomas E. Stephenson, Alberto M. Ferrer
Nuclear Science and Engineering | Volume 46 | Number 2 | November 1971 | Pages 266-273
Technical Paper | doi.org/10.13182/NSE71-A22360
Articles are hosted by Taylor and Francis Online.
Resonance parameters for 74 resonances of 165Ho below 500 eV, selected from the literature and from values compiled and recommended in BNL-325, are used as the starting point in fitting the total neutron cross-section data to a sum of the Breit-Wigner multilevel scattering and single-level capture formulas. The addition of two bound levels, one for each s-wave spin state, yields a calculated ratio of thermal neutron capture cross sections for the two s-wave spin states which agrees with experiment (≈60% of thermal capture into J = 3 states), as does the calculated value of the thermal capture cross section, 67 b. In addition, the two bound levels enable the fit of the total cross-section data to be extended to very low energies (0.2 mV). The coherent scattering cross section has been calculated and is in good agreement with the experimental value of 9.1 b. The free atom nuclear scattering cross section has been calculated to be 10.6 b. The calculated value of the potential scattering is 7.8 b and the effective scattering radius is 7.9 f. The energy-dependent paramagnetic scattering cross section (23.5 b at 0.0253 eV) and the capture and scattering resonance integrals have also been calculated (≈703 and 125 b, respectively).
