Reproducibility conditions for the pulsed X-ray emission in a vacuum spark discharge

• Autorzy: Georgescu N. , Serbãnescu C. G. , Sandolache G.
• Konferencja: International Workshop on Dense Magnetised Plasmas IWDMP’2000 (12-14.10.2000 ; Kudowa Zdrój, Poland)
• Języki publikacji: EN

Abstrakty

EN

In our laboratory, a 1 kJ vacuum spark device is developed as a pulsed X-ray source for X-ray detector calibration and applications such as X-ray microscopy and microlithography. After our previous works for the X-ray emission maximization (up to around 10 J per pulse), this paper analyses the influence of four different triggering systems on the X-ray emission reproducibility. The main conclusion is that a high-power, very fast high voltage trigger pulse is required. In order to fulfill these conditions, a pulse transformer and an air spark gap have been added to the initial triggering device (a magnetic pulse compression circuit). With the new trigger pulse (20 J/pulse, 50 ns rise-time, 22 kV amplitude in an open circuit) a reasonable X-ray emission reproducibility is obtained.

Słowa kluczowe

EN

plasma focus; reproducibility; vacuum spark; X-ray emission

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2001
• Tom: Vol. 46, suppl. 1
• Strony: 17--20
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Georgescu N.

• National Institute for Lasers, Plasma and Radiation Physics, P.O. Box MG-36, Magurele-Bucharest, R-76911, Romania, Tel.: [phone], Fax: [phone]

autor

Serbãnescu C. G.

• National Institute for Lasers, Plasma and Radiation Physics, P.O. Box MG-36, Magurele-Bucharest, R-76911, Romania, Tel.: [phone], Fax: [phone]

autor

Sandolache G.

• National Institute for Lasers, Plasma and Radiation Physics, P.O. Box MG-36, Magurele-Bucharest, R-76911, Romania, Tel.: [phone], Fax: [phone]

Bibliografia

• 1. Cengher M, Presura R, Georgescu N (1996) Experiments on a low pressure discharge powered by a magnetic pulse compression circuit. In: Proc 18th Int Symp Physics of Ionised Gases, ISPIG. Kotor, Yugoslavia, pp 432–435
• 2. Georgescu N (2000) Optimization of a vacuum spark discharge for soft-X-ray emission. In: Proc 19th Int Symp Discharges and Electrical Insulation in Vacuum, ISDEIV. Xi’an, China, pp 647–649
• 3. Georgescu N, Presura R (1997) Repetitive pulse power supplies for plasma loads. Romanian Reports in Physics 49;3-4:361–365
• 4. Georgescu N, Zoita V, Presura R (1996) Magnetic pulse compression circuits for plasma devices. In: Proc 11th Int Conf High Power Particle Beams, BEAMS’96. Praga, Czech Republic, pp 591–594
• 5. Presura R, Cengher M, Georgescu N, Zoita V (1996) Vacuum spark soft X-ray source. Romanian Reports in Physics 48;7–8:645–655
• 6. Presura R, Georgescu N, Cengher M, Zoita V (1996) Vacuum discharge driven by a magnetic pulse compression circuit. In: Proc 17th Int Symp Discharges and Electrical Insulation in Vacuum, ISDEIV. Berkeley, USA, pp 56–59