Rod-pinch diode operation at 2 to 4 MV for high resolution pulsed radiography

Autor:	G. Cooperstein, F. Pompier, C. Gonzales, F. Bayol, D. Mosher, R. Vezinet, F. C. Young, R.J. Commisso, S.B. Swanekamp, A. Garrigues, P. Charre, Raymond J. Allen
Rok vydání:	2002
Předmět:	Physics business.industry chemistry.chemical_element Plasma Tungsten Condensed Matter Physics Cathode Rod law.invention Anode Full width at half maximum Optics chemistry law Pinch business Diode
Zdroj:	Physics of Plasmas. 9:4815-4818
ISSN:	1089-7674 1070-664X
DOI:	10.1063/1.1512284
Popis:	The rod-pinch diode is operated successfully at peak voltages of 2.4–4.4 MV for peak electrical currents of 55–135 kA delivered to the diode. At 4 MV, tungsten anode rods of 1 or 2 mm diam produce on-axis doses at 1 m of 16 rad(Si) or 20 rad(Si), respectively. The on-axis source diameter based on the full width at half-maximum (FWHM) of the line-spread function (LSF) is 0.9±0.1 mm for a 1 mm diam rod and 1.4±0.1 mm for a 2 mm diam rod, independent of voltage. The LANL source diameter, determined from the modulation transfer function of the LSF, is nearly twice the FWHM. The measured rod-pinch current is reproduced with a diode model that includes ions and accounts for anode and cathode plasma expansion.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9b9e2a0a6cbd206e7f130732ce4f814e https://doi.org/10.1063/1.1512284 Zobrazit plný text záznamu