Thomson parabola spectrometer for energetic ions emitted from sub-ns laser generated plasmas

Mariapompea Cutroneo*, Lorenzo Torrisi, Lucio Ando', Salvatore Cavallaro, Jiri Ullschmied, Josef Krasa, Daniele Margarone, Andreji Velyhan, Eduard Krousky, Miroslav Pfeifer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Laser-generated plasmas were obtained in high vacuum by irradiating micrometric thin films (Au, Au/Mylar, Mylar) with the Asterix laser at the PALS Research Infrastructure in Prague. Irradiations at the fundamental wavelength, 300 ps pulse duration, at intensities up to about 1016W/cm2, enabled ions to be accelerated in forward direction with kinetic energies of the order of 2MeV/charge state. Protons above 2MeV were obtained in the direction orthogonal to the target surface in selffocusing conditions. Gold ions up to about 120MeV and 60+ charge state were detected. Ion collectors and semiconductor SiC detectors were employed in time-of-flight arrangement in order to measure the ion velocities as a function of the angle around the normal direction to the target surface. A Thomson parabola spectrometer (TPS) with a multi-channel-plate detector was used to separate the different ion contributions to the charge emission in single laser shots, and to get information on the ion charge states, energy and proton acceleration. TPS experimental spectra were compared with accurate TOSCA simulations of TPS parabolas.

Original languageEnglish
Pages (from-to)138-141
Number of pages4
JournalActa Polytechnica
Volume53
Issue number2
Publication statusPublished - 13 May 2013
Externally publishedYes

Keywords

  • Focal position
  • High intensity laser
  • Opera 3D Tosca code
  • Simulation
  • Thomson parabola spectrometer

ASJC Scopus subject areas

  • Engineering(all)

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