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Study of uniformity of elongated plasma channels formed in gas puff targets using extreme ultraviolet and soft X-ray radiation

Published online by Cambridge University Press:  17 April 2015

P.W. Wachulak ,
A. Bartnik ,
R. Jarocki ,
T. Fok ,
Ł. Węgrzyński ,
J. Kostecki ,
M. Szczurek  and
H. Fiedorowicz
P.W. Wachulak*
Affiliation:
Institute of Optoelectronics, Military University of Technology, Warsaw, Poland
A. Bartnik
Affiliation:
Institute of Optoelectronics, Military University of Technology, Warsaw, Poland
R. Jarocki
Affiliation:
Institute of Optoelectronics, Military University of Technology, Warsaw, Poland
T. Fok
Affiliation:
Institute of Optoelectronics, Military University of Technology, Warsaw, Poland
Ł. Węgrzyński
Affiliation:
Institute of Optoelectronics, Military University of Technology, Warsaw, Poland
J. Kostecki
Affiliation:
Institute of Optoelectronics, Military University of Technology, Warsaw, Poland
M. Szczurek
Affiliation:
Institute of Optoelectronics, Military University of Technology, Warsaw, Poland
H. Fiedorowicz
Affiliation:
Institute of Optoelectronics, Military University of Technology, Warsaw, Poland
*
Address correspondence and reprint requests to: P.W. Wachulak, Institute of Optoelectronics, Military University of Technology, ul. gen. S. Kaliskiego 2, 00-908 Warsaw, Poland. E-mail: wachulak@gmail.com
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Abstract

The results of formation of elongated krypton/helium plasma channels are presented. Two laser pulses were used: one to produce plasma channels and the second one for conversion to soft X rays. The soft X-ray radiation was in turn used for backlighting the channels and their visualization. The study of their formation and uniformity was performed using a combination of soft X-ray shadowgraphy and pinhole camera imaging. The plasma channels, with various lengths and various densities, were visualized and the results of their characterization are presented. Using moderate laser pulse energy quite uniform channels, up to 9 mm in length, were demonstrated.

Keywords

Gas puff targetsLaser–matter interactionsPlasma channelsShadowgraphySoft X-ray shadowgraphy
Type
Research Article
Information
Laser and Particle Beams , Volume 33 , Issue 2 , June 2015 , pp. 293 - 298
Copyright
Copyright © Cambridge University Press 2015 

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References

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