Plasma Opacity and Laser Ablation Measurements Using X-Ray Lasers
| Autor: | Greg J. Tallents, M. H. Edwards, Geoffrey J. Pert, Alice Delserieys, M. M. Notley, Ciaran Lewis, M. Stupka, D. S. Whittaker, Tomas Mocek, H. Huang, B. Rus, A. R. Praeg, Nicola Booth, D. Neely, Jiri Polan, P. Homer, M. Koslova, C M McKenna, P. Mistry |
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| Přispěvatelé: | Department of Physics, University of York [York, UK], Department of X Ray Lasers, institute of physics PALS center, Department of X-ray Lasers, Czech Academy of Sciences [Prague] (CAS), Institute of Physics (PALS), STFC Rutherford Appleton Laboratory (RAL), Science and Technology Facilities Council (STFC) |
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Laser ablation
Materials science Opacity business.industry X-ray Plasma Laser 01 natural sciences 010305 fluids & plasmas Pulse (physics) law.invention X-ray laser Optics law [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph] 0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] 010306 general physics business Layer (electronics) ComputingMilieux_MISCELLANEOUS |
| Zdroj: | X-Ray Lasers 2006 X-Ray Lasers 2006, 115, Springer Netherlands, pp.445-454, 2006, Springer Proceedings in Physics, ⟨10.1007/978-1-4020-6018-2_55⟩ Springer Proceedings in Physics ISBN: 9781402060175 |
| Popis: | The use of x-ray lasers as probes of the opacity of hot dense plasma and rates of laser ablation is considered. It is shown that x-ray lasers are sufficiently bright to overcome plasma emission and enable plasma opacity to be measured. A demonstration experiment is presented where the temporal evolution of the opacity of a thin iron plasma at high temperature (30 – 250 eV) formed from an initially 50 nm thick solid tamped with a plastic overlay after heating by a laser pulse has been measured using the transmission of a nickel-like silver x-ray laser at 13.9 nm. The experimental results are compared to transmission calculations based on the iron opacity evaluated in a post-processor from predictions of the plasma conditions using a fluid and atomic physics code (EHYBRID). In another experiment, it is shown that laser ablation of a solid iron layer that is not tamped can be determined by the change in transmission of a 21.2 nm x-ray laser. |
| Databáze: | OpenAIRE |
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