Effect of Rod Material on the Impedance Behavior of Small Aspect Ratio Rod Pinches

Autor:	Joshua J. Leckbee, Andrew L. McCourt, V. Harper-Slaboszewicz, Patrick W. Lake
Rok vydání:	2014
Předmět:	Nuclear and High Energy Physics Materials science Tantalum chemistry.chemical_element Plasma Tungsten Condensed Matter Physics Aspect ratio (image) Rod Anode chemistry Graphite Composite material Electrical impedance Linear transformer driver
Zdroj:	IEEE Transactions on Plasma Science. 42:2207-2212
ISSN:	1939-9375 0093-3813
Popis:	A series of experiments on small aspect ratio rod pinches using solid tungsten, solid graphite, and thin-wall tantalum anode rods driven by a nominally 375-kV linear transformer driver, powered inductive voltage adder has characterized the impedance behavior over a range of aspect ratios and materials. For the tungsten and tantalum anodes, the impedance behavior is well described by the pinched current for self-magnetically insulated flow in a cylindrical geometry with ions present and gap closure velocities of 1-2 cm/μs. The graphite anodes always exhibited strong localized pinching of the electron beam onto the anode rod, with substantially higher operating impedance, as well as a delay in the formation of the plasma at the anode. The graphite anodes also had a longer radiation delay time, consistent with the longer anode plasma formation time.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3cad430f91898f21123db7f981929997 https://doi.org/10.1109/tps.2014.2346701 Zobrazit plný text záznamu