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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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What’s in your Dubai chocolate? Nuclear scientists test pistachios for toxins
For the uninitiated, Dubai chocolate is a candy bar filled with pistachio and tahini cream and crispy pastry recently popularized by social media influencers. While it’s easy to dismiss as a viral craze now past its peak, the nutty green confection has spiked global pistachio demand, and growers and processors are ramping up production. That means more pistachios need to be tested for aflatoxins—a byproduct of a common crop mold.
D. Graham Foster, Jr.
Nuclear Science and Engineering | Volume 8 | Number 2 | August 1960 | Pages 148-156
Technical Paper | doi.org/10.13182/NSE60-A25790
Articles are hosted by Taylor and Francis Online.
The age to indium resonance of nearly monoenergetic 0.97-Mev neutrons from spherical Na-γ-Be sources has been measured in water and kerosene. The age from a point source is inferred by extrapolation from measurements made with sources ¾ and ⅜ in. in diameter. The flux age is 13.9 ± 0.2 cm2 in water and 13.8 ± 0.2 cm2 in kerosene. Calculations by the moments method give 13.9 ± 0.1 cm2 in each medium, in excellent agreement with the measurements. The thermal migration area measured concurrently is 21.5 ± 0.4 cm2 in water and 20.6 ± 0.4 cm2 in kerosene. The migration area calculated from the resonance age is 22.2 ± 0.5 cm2 in water and 21.8 ± 0.5 cm2 in kerosene. Both of these are substantially larger than the measured values.
