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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.
I. Cantarell
Nuclear Science and Engineering | Volume 18 | Number 1 | January 1964 | Pages 31-48
Technical Paper | doi.org/10.13182/NSE64-A18139
Articles are hosted by Taylor and Francis Online.
The results of a systematic qualitative and quantitative study of the little understood phenomenon of fatigue in photomultiplier tubes are presented in this paper. A precision of 0.4% was obtained in the measurements. After having determined the variables that affect fatigue and the mathematical dependence of fatigue with each of them, the general properties of fatigue and the nature and mechanism of the effect are discussed. Photomultiplier fatigue appears as a field emission from the dynode bombardment, probably combined with diffusion or conductivity through the thin insulator film of the dynode surface.
