An electromagnetic railgun accelerator: a generator of strong shock waves in channels

Autor:	B. G. Zhukov, R. O. Kurakin, S. A. Ponyaev, Sergey Bobashev, B. I. Reznikov
Rok vydání:	2014
Předmět:	Shock wave Physics Physics and Astronomy (miscellaneous) Astrophysics::High Energy Astrophysical Phenomena chemistry.chemical_element Plasma Railgun symbols.namesake chemistry Mach number Torr Electric field symbols Atomic physics Shock tube Astrophysics::Galaxy Astrophysics Helium
Zdroj:	Technical Physics Letters. 40:1003-1006
ISSN:	1090-6533 1063-7850
DOI:	10.1134/s1063785014110200
Popis:	Processes that accompany the generation of strong shock waves during the acceleration of a free plasma piston (PP) in the electromagnetic railgun channel have been experimentally studied. The formation of shock waves in the railgun channel and the motion of a shock-wave-compressed layer proceed (in contrast to the case of a classical shock tube) in a rather strong electric field (up to 300 V/cm). The experiments were performed at the initial gas pressures in the channel ranging from 25 to 500 Torr. At 25 Torr, the shock-wave Mach numbers reached 32 in argon and 16 in helium. At high concentrations of charged particles behind the shock wave, the electric field causes the passage of a part of the discharge current through the volume of the shock-wave-compressed layer, which induces intense glow comparable with that of the PP glow.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::393bfe33f9c9da8546700e37a76e8f5e https://doi.org/10.1134/s1063785014110200 Zobrazit plný text záznamu Plný text ve formátu PDF