Transition from Beam-Target to Thermonuclear Fusion in High-Current DeuteriumZ-Pinch Simulations

Autor:	Anthony Link, Dustin Offermann, D. V. Rose, Carsten Thoma, C. B. Mostrom, Andrea Schmidt, Dale Welch, R. E. Clark
Rok vydání:	2016
Předmět:	Physics Thermonuclear fusion Lawson criterion General Physics and Astronomy Plasma 01 natural sciences Instability 010305 fluids & plasmas Nuclear physics Electric field Z-pinch 0103 physical sciences Pinch 010306 general physics Scaling
Zdroj:	Physical Review Letters. 116
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.116.195001
Popis:	Fusion yields from dense, $Z$-pinch plasmas are known to scale with the drive current, which is favorable for many potential applications. Decades of experimental studies, however, show an unexplained drop in yield for currents above a few mega-ampere (MA). In this work, simulations of DD $Z$-Pinch plasmas have been performed in 1D and 2D for a constant pinch time and initial radius using the code Lsp, and observations of a shift in scaling are presented. The results show that yields below 3 MA are enhanced relative to pure thermonuclear scaling by beamlike particles accelerated in the Rayleigh-Taylor induced electric fields, while yields above 3 MA are reduced because of energy lost by the instability and the inability of the beamlike ions to enter the pinch region.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a9b15a2e3235920bbf45f0ca19a96ad https://doi.org/10.1103/physrevlett.116.195001 Zobrazit plný text záznamu