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Title: Application of the Interactive system for the Atomic Spectra Interpretation to the Argon-Filled-Capillary Discharge

Abstract

A simple interpreting method is demonstrated on five examples of spectra characteristic for argon-filled-capillary discharge in the region of soft x-ray wavelengths. The method is based on the visual comparison between the experimental and the model spectrum. The model spectrum is dynamically generated for the given atomic species for selected value of electron temperature.

Authors:
; ; ; ; ; ; ;  [1]
  1. Institute of Plasma Physics, Academy of Sciences of the Czech Republic, Za Slovankou 3, 182 00 Prague 8 (Czech Republic)
Publication Date:
OSTI Identifier:
20729263
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 808; Journal Issue: 1; Conference: 6. international conference on dense Z-pinches, Oxford (United Kingdom), 25-28 Jul 2005; Other Information: DOI: 10.1063/1.2159366; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 07 ISOTOPES AND RADIATION SOURCES; ARGON; CAPILLARIES; COMPARATIVE EVALUATIONS; ELECTRIC DISCHARGES; ELECTRON TEMPERATURE; EMISSION SPECTRA; SOFT X RADIATION; WAVELENGTHS; X-RAY LASERS

Citation Formats

Straus, J., Kolacek, K., Bohacek, V., Frolov, O., Prukner, V., Schmidt, J., Vrba, P., and Weinzettl, V.. Application of the Interactive system for the Atomic Spectra Interpretation to the Argon-Filled-Capillary Discharge. United States: N. p., 2006. Web. doi:10.1063/1.2159366.
Straus, J., Kolacek, K., Bohacek, V., Frolov, O., Prukner, V., Schmidt, J., Vrba, P., & Weinzettl, V.. Application of the Interactive system for the Atomic Spectra Interpretation to the Argon-Filled-Capillary Discharge. United States. doi:10.1063/1.2159366.
Straus, J., Kolacek, K., Bohacek, V., Frolov, O., Prukner, V., Schmidt, J., Vrba, P., and Weinzettl, V.. Thu . "Application of the Interactive system for the Atomic Spectra Interpretation to the Argon-Filled-Capillary Discharge". United States. doi:10.1063/1.2159366.
@article{osti_20729263,
title = {Application of the Interactive system for the Atomic Spectra Interpretation to the Argon-Filled-Capillary Discharge},
author = {Straus, J. and Kolacek, K. and Bohacek, V. and Frolov, O. and Prukner, V. and Schmidt, J. and Vrba, P. and Weinzettl, V.},
abstractNote = {A simple interpreting method is demonstrated on five examples of spectra characteristic for argon-filled-capillary discharge in the region of soft x-ray wavelengths. The method is based on the visual comparison between the experimental and the model spectrum. The model spectrum is dynamically generated for the given atomic species for selected value of electron temperature.},
doi = {10.1063/1.2159366},
journal = {AIP Conference Proceedings},
number = 1,
volume = 808,
place = {United States},
year = {Thu Jan 05 00:00:00 EST 2006},
month = {Thu Jan 05 00:00:00 EST 2006}
}
  • 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{sup 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 longermore » external prepulse was used, and the gas-filling system was further optimized. For each version, results of X-ray measurements are presented and interpreted.« less
  • 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{sup 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 longermore » external prepulse was used, and the gas-filling system was further optimized. For each version, results of X-ray measurements are presented and interpreted.« less
  • The application of the gas-filled capillary discharge waveguide to laser-plasma accelerators is reviewed. The results of experiments to guide high-intensity laser pulses in capillaries with circular or square cross-sections are described. The relation between capillary diameter, guided spot size, and plasma density are explored, and a possible new hybrid regime of guiding is identified.
  • We have reported the argon (Ar) plasma waveguide produced in an alumina (Al{sub 2}O{sub 3}) capillary discharge and used to guide ultrashort laser pulses at intensities of the order of 10{sup 16} W/cm{sup 2}. The electron density in the plasma waveguide was measured to be 1x10{sup 18} cm{sup -3}, in agreement with one-dimensional magnetrohydrodynamic (MHD) simulations. The MHD code was also used to evaluate the degree of ionization of argon (Ar) in the preformed plasma waveguide. The maximum ion charge state of Ar{sup 3+} in capillary discharge was measured and obtained in the MHD simulations. The spectrum of the propagatedmore » laser pulse in the Ar plasma waveguide was not modified and was well reproduced by a particle-in-cell simulations under initial ion charge state of Ar{sup 3+} in the preformed plasma waveguide. The optimum timing for the laser pulse injection was around 150 ns after initiation of a discharge with a peak current of 200 A.« less
  • We report the operation of a discharge-produced argon (Ar) plasma waveguide in an alumina (Al{sub 2}O{sub 3}) capillary to guide a 10{sup 16}-W/cm{sup 2} ultrashort laser pulse for shorter wavelength light sources at high repetition rate operation. The electron density in the plasma channel was measured to be 1 x 10{sup 18} cm{sup -3}. Modeling with a one-dimensional magnetrohydrodynamic code was used to evaluate the degree of ionization of Ar in the preformed plasma channel. The observed spectrum of the laser pulse after propagation in the argon plasma waveguide was not modified and was well reproduced by a particle inmore » cell simulation.« less