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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Moving past Sayre’s Law on low-dose radiation
Craig Piercycpiercy@ans.org
So, President Trump has just kicked the low-dose radiation hornets’ nest.
Specifically, his recently signed executive order “Ordering the Reform of the Nuclear Regulatory Commission” calls for the NRC to “reconsider reliance” on the linear no-threshold (LNT) theory and the ALARA (as low as reasonably achievable) standard for radiation protection.
This directive will certainly reignite a vociferous debate within the radiation research community over the continued efficacy of using LNT as the basis for protecting the public and the environment, a community that has been wracked with controversy on this matter for the last few years.
I must admit that whenever the low-dose issue comes up, my first thoughts always go to Sayre’s Law.
Yanan Li, Zaodi Zhang, Size Chen, Lianxin Zhang, Taosheng Li
Nuclear Technology | Volume 208 | Number 9 | September 2022 | Pages 1354-1364
Technical Paper | doi.org/10.1080/00295450.2021.2021770
Articles are hosted by Taylor and Francis Online.
Fast neutron radiography (FNR) has a great potential as a nondestructive technique for testing large objects. A FNR system developed based on a deuterium-tritium neutron generator is presented. Resolution of the FNR system is analyzed using the modulation transfer function (MTF). FNR experiments based on film and charge-coupled device imaging are carried out, respectively. The experimental results of image resolution are compared with the results of MTF calculation. Moreover, the impacts of various system components on signal degradation are discussed in this paper.
