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2025: The year in nuclear
As Nuclear News has done since 2022, we have compiled a review of the nuclear news that filled headlines and sparked conversations in the year just completed. Departing from the chronological format of years past, we open with the most impactful news of 2025: a survey of actions and orders of the Trump administration that are reshaping nuclear research, development, deployment, and commercialization. We then highlight some of the top news in nuclear restarts, new reactor testing programs, the fuel supply chain and broader fuel cycle, and more.
Michael D. Baehre, Don Steiner
Fusion Science and Technology | Volume 17 | Number 3 | May 1990 | Pages 412-426
Technical Paper | Plasma Engineering | doi.org/10.13182/FST90-A29217
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A simple, yet comprehensive, model of the divertor region is presented. The model is based on the two-point approach described by Galambos and Peng but has been enhanced to include the key processes of remote radiative cooling, neutral recycling, particle convection, ash effects, and the effects of divertor geometry and plate material. Neutral particle effects are represented using a wedge-shaped section of plasma overlying the divertor plate and a slab attenuation model. The results of benchmarking against four other divertor models demonstrate the applicability of the proposed model. System sensitivities to key parameters are discussed and several general observations regarding divertor design are presented.