Nonlinear impact of the porous nanostructure on the net tungsten erosion in the linear plasma device PISCES-A

Yang, K. R.; Dai, S. Y.; Doerner, R. P.; Liu, D. H.; Chen, J. Y.; Wang, D. Z.

doi:10.1088/1741-4326/ac8010

Title: Nonlinear impact of the porous nanostructure on the net tungsten erosion in the linear plasma device PISCES-A

Journal Article · 05 August 2022 · Nuclear Fusion

DOI:https://doi.org/10.1088/1741-4326/ac8010· OSTI ID:1979421

Yang, K. R.;

; Doerner, R. P.; Liu, D. H.; Chen, J. Y.;

Abstract The tungsten fuzz growth under non-erosive and erosive helium plasmas in the linear plasma device PISCES-A has been investigated by experiments and simulations. The simulation results benchmarked against the experimental measurements indicate a decayed net physical sputtering yield during fuzz growth under the erosive helium plasma. Further, a nonlinear dependence of the net tungsten erosion on the ‘effective’ porous nanostructure that can be sputtered by incident helium particles has been found.

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Research Organization:: Univ. of California, San Diego, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

DOE Contract Number:: FG02-07ER54912

OSTI ID:: 1979421

Journal Information:: Nuclear Fusion, Vol. 62, Issue 9; ISSN 0029-5515

Publisher:: IOP Science

Country of Publication:: United States

Language:: English

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