PPPL-5379

“Feathered” fractal surfaces to minimize secondary electron emission

Authors: C. Swanson and I. Kaganovich

Abstract: Complex structures on a material surface can significantly reduce the total secondary electron emission from that surface. The reduction occurs due to the capture of low-energy, true secondary electrons emitted at one point of the structure and intersecting
another. We performed Monte-Carlo calculations to demonstrate that fractal surfaces can reduce net secondary electron emission produced by the surface as compared to the at surface. Specifically, we describe one surface, a \feathered" surface, which reduces the
secondary electron emission yield more effectively than other previously considered configurations.

Submitted to: Physics of Plasmas
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Download PPPL-5379 1.7 MB (7 pp)
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