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Fusion Science and Technology
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Securing the advanced reactor fleet
Physical protection accounts for a significant portion of a nuclear power plant’s operational costs. As the U.S. moves toward smaller and safer advanced reactors, similar protection strategies could prove cost prohibitive. For tomorrow’s small modular reactors and microreactors, security costs must remain appropriate to the size of the reactor for economical operation.
Timofeev A.V., Tupikov S.E.
Fusion Science and Technology | Volume 35 | Number 1 | January 1999 | Pages 253-257
Oral Presentations | doi.org/10.13182/FST99-A11963862
Articles are hosted by Taylor and Francis Online.
The influence of a non-uniform electrical field, perpendicular magnetic on drift instability was studied by Sanuki et al.1,2 They have shown, that the drift instability is stabilized at a rather large gradient of an electrical field. This result was received by means of the analysis of an integral wave equation, which describes the plasma oscillations with Gaussian profile of density and linear profile of an electrical field at arbitrary Larmour radius of charged particles.
We describe the drift oscillation by the differential wave equation. This equation can be used at any profiles of plasma density and electrical field, if Larmour radius of the charged particles is rather small. In case of linear profile of an electrical field, our results confirm those received in 1,2. We have also shown, that the drift instability is transformed to Kelvin-Helmholtz instability in case of an electrical field profile with an inflexion point (smooth step profile).