Publication detail

Role of the wall ablation in the operation of a 46.9 nm Ar capillary discharge soft x-ray laser

RITUCCI, A. TOMASSETTI, G. REALE, A. PALLADINO, L. REALE ,L. FLORA, F. MEZI, L. KUKHLEVSKY, S.V. FAENOV, A. PIKUZ, T. KAISER, J.

Original Title

Role of the wall ablation in the operation of a 46.9 nm Ar capillary discharge soft x-ray laser

Type

journal article - other

Language

English

Original Abstract

A capillary discharge Pumped soft x-ray laser operating at 46.9 nm on the 3p-3s transition of the Ne-like Ar has been realized by pumping the active medium with a relatively slow current pulse (dI/dt approximate to 6.10(11) A/s). In order to study the role of the ablation in the production of the laser effect, the intensity of the amplified 46.9 nm line has been investigated using the same pumping current pulses in the plastic (polyacetal) and ceramic (Al2O3). We showed that the ablation of the capillary walls is unfavorable both for the compression and stability of the plasma and consequently for the soft x-ray laser production. The amplification and lasing effects are observed only in the ceramic channel. The measurements of the line intensity at 46.9 mn showed the lasing with a gain-length product of approximate to 9, a laser pulse energy of approximate to 5 muJ, a pulse duration of 1.3 ns and a beam divergence of approximate to 3.5 mrad. In addition, effect of the scaling of the time of lasing with the initial plasma diameter was demonstrated experimentally and compared with a one-dimensional MHD model.

Keywords

capillary discharge, x-ray laser, ablation, NE-LIKE AR, PLASMA, EVOLUTION, GAIN

Authors

RITUCCI, A. TOMASSETTI, G. REALE, A. PALLADINO, L. REALE ,L. FLORA, F. MEZI, L. KUKHLEVSKY, S.V. FAENOV, A. PIKUZ, T. KAISER, J.

RIV year

2003

Released

1. 1. 2003

ISBN

0863-1042

Periodical

Contributions to Plasma Physics

Year of study

43

Number

2

State

Federal Republic of Germany

Pages from

88

Pages to

94

Pages count

6

BibTex

@article{BUT42048,
  author="Jozef {Kaiser}",
  title="Role of the wall ablation in the operation of a 46.9 nm Ar capillary discharge soft x-ray laser",
  journal="Contributions to Plasma Physics",
  year="2003",
  volume="43",
  number="2",
  pages="88--94",
  issn="0863-1042"
}