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Fusion Science and Technology
Latest News
NRC proposed rule for licensing reactors authorized by DOE, DOD
Nuclear reactor designs approved by the Department of Energy or Department of Defense could get streamlined pathways through the Nuclear Regulatory Commission’s commercial licensing process should applicants wish to push the technology into the civilian sector.
A proposed rule introduced April 2 by the NRC would “improve NRC licensing review efficiency, where applicable, by explicitly establishing by regulation an additional means for reactor applicants to demonstrate the safety functions of their reactor designs, and thus, would contribute to the safe and secure use and deployment of civilian nuclear energy technologies.”
I. Geoffray, J. Andre, R. Bourdenet, J. Schunck, C. Chicanne, M. Theobald
Fusion Science and Technology | Volume 70 | Number 2 | August-September 2016 | Pages 244-253
Technical Paper | doi.org/10.13182/FST15-221
Articles are hosted by Taylor and Francis Online.
Hydrodynamics growth experiments involve rippled ablator samples (CHx, Ge:CH, or Si:CH). The rippled surface features a microscale mathematical shape (sinusoidal functions are widely used). Nevertheless, experiments have progressed with time, and samples evolved gradually from two-dimensional (planar samples) to three-dimensional geometries (capsules).
This paper presents various processes that have been developed to fulfill such specifications. Various technologies, based on laser means (excimer laser, Ti:sapphire laser) or mechanical ultraprecision means, have been successfully applied to ripples machining (planar samples or capsules).
The main results are discussed showing the ability and accuracy of each technology as well as their main limitations. We focus especially on our latest results (i.e., rippled or grooved capsules).