Generation of high currents of carbon ions with the use of subnanosecond near-infrared laser pulses

J. Krása*, A. Velyhan, D. Margarone, E. Krousk, J. Ullschmied, J. Skála, L. Láska, K. Jungwirth, K. Rohlena

*Corresponding author for this work

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9 Citations (Scopus)

Abstract

Emission of carbon currents reaching values up to 2 A/ cm2 at a distance of 1 m from the laser ion source driven by the subnanosecond Prague Asterix Laser System operated at a fundamental wavelength of 1315 nm is reported. Graphite targets were exposed to intensities up to 5× 10 16 W/ cm2 varying both the laser energy and the position of the laser beam focus with respect to the target surface. The maximum energy gain of carbon ions was ≈1 MeV/u. At high laser intensities the shape of time-of-flight spectra is also formed by plasma outbursts, whose growth correlates with the oscillatory self-focusing of the laser beam.

Original languageEnglish
Article number02A504
JournalReview of Scientific Instruments
Volume81
Issue number2
DOIs
Publication statusPublished - 2010
Externally publishedYes

Bibliographical note

Funding Information:
This work was partly supported by the Academy of Sciences of the Czech Republic (Project No. AV0Z10100523) and by the Grant Agency of the ASCR (Grant No. IAA100100715).

Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.

ASJC Scopus subject areas

  • Instrumentation

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