Amplification of spontaneous emission of neon-like argon in a fast gas-filled capillary discharge

• Published in: Plasma physics reports Vol. 34; no. 2; pp. 162 - 168
• Main Authors: Kolacek, K., Schmidt, J., Bohacek, V., Ripa, M., Frolov, O., Vrba, P., Straus, J., Prukner, V., Rupasov, A. A., Shikanov, A. S.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01-02-2008
• Subjects: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; AMPLIFICATION; ARGON; ARGON IONS; Atomic; CAPILLARIES; ELECTRIC DISCHARGES; EMISSION; Low-Temperature Plasma; Molecular; MULTICHARGED IONS; NEON; Optical and Plasma Physics; Physics; Physics and Astronomy; PLASMA DIAGNOSTICS; PLASMA PRODUCTION; X RADIATION; 52.30.Cv; 52.25.Dg; 52.25.Fi; 52.27.Cm
• ISSN: 1063-780X; 1562-6938
• DOI: 10.1134/S1063780X08020086

The evolution of the CAPEX facility and its basic diagnostics are described. The experiments carried out in the last modification of this facility accomplished with the demonstration of amplified spontaneous emission of neon-like argon (Ar
8+
) at the wavelength 46.88 nm. The first version of the facility, CAPEX1, operated with a plastic capillary and had a short high-power passive prepulse and an imperfect gas-filling system. In the second version, CAPEX2, a ceramic capillary was used, the prepulse amplitude was lowered, and the gas-filling system was improved. In the third, most successful version, CAPEX3, the capillary bending was reduced, a longer external prepulse was used, and the gas-filling system was further optimized. For each version, results of X-ray measurements are presented and interpreted.