Temporal evolution of electron density and temperature in capillary discharge plasmas

Autor:	In W. Lee, Seong Y. Oh, Hyyong Suk, Hoonsoo Kang, Han S. Uhm
Rok vydání:	2010
Předmět:	Electron density Chemistry Capillary action Capillary Plasma Resolution (electron density) General Physics and Astronomy Electron temperature chemistry.chemical_element Plasma diagnostics Plasma Atomic physics Helium
Zdroj:	Journal of Applied Physics. 107:103309
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.3415553
Popis:	Time-resolved spectroscopic measurements of a capillary discharge plasma of helium gas were carried out to obtain detailed information about dynamics of the discharge plasma column, where the fast plasma dynamics is determined by the electron density and temperature. Our measurements show that the electron density of the capillary plasma column increases sharply after gas breakdown and reaches its peak of the order of 1018 cm−3 within less than 100 ns, and then it decreases as time goes by. The result indicates that a peak electron density of 2.3×1018 cm−3 occurs about 65 ns after formation of the discharge current, which is ideal for laser wakefield acceleration experiments reported by Karsch et al. [New J. Phys. 9, 415 (2007)].
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::88f06395ebcbcba4342205b54da95703 https://doi.org/10.1063/1.3415553 Zobrazit plný text záznamu