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November 9–12, 2025
Washington, DC|Washington Hilton
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Fusion Science and Technology
Latest News
Indonesia begins working on Cs-137 cleanup
In August, there was much buzz about the Food and Drug Administration ordering a recall on frozen shrimp imported from Indonesia that was found to be contaminated with cesium-137. While the level of radioactivity in the shrimp was orders of magnitude below a level that would cause any measurable harm to consumers, the concentration of Cs-137 was nonetheless unusual.
Tatsuya Suzuki, Kazunori Takahashi
Fusion Science and Technology | Volume 63 | Number 1 | May 2013 | Pages 398-400
doi.org/10.13182/FST13-A16967
Articles are hosted by Taylor and Francis Online.
An electron temperature and a volume-averaged plasma density are experimentally investigated for various argon gas pressure and rf power in permanent-magnets-expanding plasma sources with two different diameters of 6.6 cm and 13.3 cm for the purpose of performance improvement of a electrodeless, magnetically expanding plasma thruster. The results are compared with a global model using particle balance and power balance equations. The theoretical values are in fair agreement with the measured ones. The experimental and modeled results suggest that a ~50 percent increase in the thrust from the electron pressure can be achieved by the enlargement of the source diameter from 6.6 to 13.3 cm.
