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

0352599 - ÚFP 2011 RIV US eng J - Článek v odborném periodiku
Koláček, Karel - Prukner, Václav - Schmidt, Jiří - Frolov, Oleksandr - Štraus, Jaroslav
A potential environment for lasing below 15 nm initiated by exploding wire in water.
Laser and Particle Beams. Roč. 28, č. 1 (2010), s. 61-67. ISSN 0263-0346. E-ISSN 1469-803X.
[International Conference on the Frontiers of Plasma Physics and Technology/4th./. Kathmandu, Nepal, 06.04.2009-10.04.2009]
Grant CEP: GA MŠMT LA08024; GA MŠMT(CZ) LC528; GA AV ČR KAN300100702; GA AV ČR KJB100430702
Výzkumný záměr: CEZ:AV0Z20430508
Klíčová slova: exploding wire in water * modeling of wire explosion * measurement of H-alpha line profile
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
Impakt faktor: 3.656, rok: 2010
http://journals.cambridge.org/action/displayFulltext?type=1&fid=7482804&jid=LPB&volumeId=28&issueId=01&aid=7482796

Proximity wall stabilized, fast (>4x1011 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 EUV and soft X-ray region. Exploding wire in water resembles a metal-vapour-filled capillary with liquid, ever fresh wall (without any metallic deposit). Modelling of wire explosion (inclusive melting and boiling phase transitions, thermal diffusion, and variable conductivity) by the originally skinned driving current is described. Modelling 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-vapour 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.
Trvalý link: http://hdl.handle.net/11104/0192074