Critical Parameters of the Pumping Scheme of Ar +8 Lasers Excited by Z Pinches in Long Capilaries

J. Szasz, M. Kiss, I. Santa, S. Szatmari, S. V. Kukhlevsky

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The present study is focused on the demonstration of the most critical parameters of the pumping scheme of a table-top Ar +8-laser excited by discharges with relatively low current and voltage (I ≤ 20 kA, U ≤ 200 kV) in long (L ∼ 0.5 m) capillaries. The most critical parameters of the pumping scheme were analyzed and then adjusted experimentally. The table-top size is attributed to the use of a low-inductance co-axial discharge configuration that decreases the voltage and current necessary for laser excitation. Low inductance is achieved by using a capillary, water-capacitor and water spark-gap placed into a chamber filled with deionized water. The capillary z-pinch is produced by the water capacitor, which is pulse-charged by a six-stage Marx generator, optimized for the low-inductance discharge configuration. Optimization is performed by adjusting the value of the charging inductance and the peak charging voltage with a water spark-gap. At the optimal conditions laser pulses with a Gaussian-like intensity distribution and divergence angle ∼ 1 mrad and energy ∼ 10 μJ are generated. The physical method for generation of a laser beam with such parameters is based on the use of a long (L = 0.45 m) capillary plasma.

Original languageEnglish
Pages (from-to)770-775
Number of pages6
JournalContributions to Plasma Physics
Volume52
Issue number9
DOIs
Publication statusPublished - Oct 1 2012

Keywords

  • Capillary X-ray lasers
  • Capillary Z-pinches

ASJC Scopus subject areas

  • Condensed Matter Physics

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