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A potential environment for lasing below 15 nm initiated by exploding wire in water

Published online by Cambridge University Press:  21 January 2010

K. Kolacek ,
V. Prukner ,
J. Schmidt ,
O. Frolov  and
J. Straus
K. Kolacek*
Affiliation:
Institute of Plasma Physics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
V. Prukner
Affiliation:
Institute of Plasma Physics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
J. Schmidt
Affiliation:
Institute of Plasma Physics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
O. Frolov
Affiliation:
Institute of Plasma Physics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
J. Straus
Affiliation:
Institute of Plasma Physics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
*
Address correspondence and reprint requests to: K. Kolacek, Institute of Plasma Physics, Academy of Sciences of the Czech Republic, v.v.i., Za Slovankou 3, 182 00 Prague 8, Czech Republic. E-mail: kolacek@ipp.cas.cz
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Abstract

Proximity wall stabilized, fast (>4 × 1011 A/s), high current (>40 kA) discharges are capable to create long, dense, hot, stable, non-equilibrium plasma column, suitable e.g., for radiation amplification or even for lasing in extreme ultraviolet and soft X-ray region. Exploding wire in water resembles a metal-vapor-filled capillary with liquid, ever fresh wall (without any metallic deposit). Modeling of wire explosion (inclusive melting and boiling phase transitions, thermal diffusion, and variable conductivity) by the originally skinned driving current is described. Modeling results are compared with measurement of the discharge current and with side-on and end-on monitoring of H-alpha line emission. Analysis of H-alpha line profile is used for diagnostic of water-vapor layer around the wire. The differences between model and reality are attributed to the fact that the pressure dependence of material constants was neglected in the first approximation.

Keywords

Capillary dischargesExploding wires in waterExtreme ultraviolet lasersSoft X-ray lasers
Type
Research Article
Information
Laser and Particle Beams , Volume 28 , Issue 1 , March 2010 , pp. 61 - 67
Copyright
Copyright © Cambridge University Press 2010

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