Role of relativistic laser intensity on isochoric heating of metal wire targets
| Autor: | Dimitri Batani, J. J. Santos, O. Turianska, E. J. Hume, D. Khaghani, G. Boutoux, Lorenzo Giuffrida, Kate Lancaster, Luca Antonelli, S. A. Pikuz, F. Barbato, A. S. Martynenko, Joachim Jacoby, O. N. Rosmej, Paul Neumayer, J. J. Honrubia |
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| Rok vydání: | 2021 |
| Předmět: |
Shock wave
X-ray spectroscopy High power lasers Plasma diagnostics X ray spectroscopy Materials science business.industry Isochoric process X ray spectroscopy Warm dense matter Laser Atomic and Molecular Physics and Optics High power lasers law.invention Plasma diagnostics Optics law Wavelength-division multiplexing Emission spectrum business |
| Zdroj: | Optics express. 29(8) |
| ISSN: | 1094-4087 0295-5075 |
| Popis: | In a recent experimental campaign, we used laser-accelerated relativistic hot electrons to ensure heating of thin titanium wire targets up to a warm dense matter (WDM) state [EPL 114, 45002 (2016)10.1209/0295-5075/114/45002]. The WDM temperature profiles along several hundred microns of the wire were inferred by using spatially resolved X-ray emission spectroscopy looking at the Ti Kα characteristic lines. A maximum temperature of ∼30 eV was reached. Our study extends this work by discussing the influence of the laser parameters on temperature profiles and the optimisation of WDM wire-based generation. The depth of wire heating may reach several hundreds of microns and it is proven to be strictly dependent on the laser intensity. At the same time, it is quantitatively demonstrated that the maximum WDM temperature doesn’t appear to be sensitive to the laser intensity and mainly depends on the deposited laser energy considering ranges of 6×1018–6×1020 W/cm2 and 50–200 J. |
| Databáze: | OpenAIRE |
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