Numerical modelling of low temperature laser produced magnesium plasma

A. Al-Khateeb, L.A. Doyle, A.H. El-Astal, Martin Lamb, Ciaran Lewis, G.W. Martin, Thomas Morrow, G.J. Pert, David Riley, I. Weaver, T.P. Williamson

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The two-dimensional laser-plasma-interaction hydrodynamic code POLLUX has been used to simulate the ablation of a magnesium target by a 30-ns, 248-nm KrF excimer laser at low laser fluences of ≤10 J cm2. This code, originally written for much higher laser intensities, has been recently extended to include a detailed description of the equation of state in order to treat changes of phase within the target material, and also includes a Thomas Fermi description of the electrons. The simulated temporal and spatial evolution of the plasma plume in the early phase of the expansion (≤100 ns) is compared with experimental interferometric measurements of electron density. The expansion dynamics are in good agreement, although the simulated electron number density is about 2.5 times higher than the experimental values.
Original languageEnglish
Pages (from-to)479-482
Number of pages4
JournalApplied Physics A-materials Science & Processing
Volume69
Issue number1
DOIs
Publication statusPublished - Dec 1999
Event5th International Conference on Laser Ablation COLA'99 - Gottingen, Germany
Duration: 01 Jul 199901 Jul 1999

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

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