Determining the short laser pulse contrast based on X-Ray emission spectroscopy
| Autor: | C. Spindloe, Ryosuke Kodama, Paul McKenna, N. Booth, L. Doehl, C. D. Baird, A. S. Martynenko, P. Durey, C. D. Murphy, S. A. Pikuz, I. Yu. Skobelev, Nigel Woolsey, Kate Lancaster, Tatiana Pikuz, S. N. Ryazantsev, D. Farley |
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| Rok vydání: | 2021 |
| Předmět: |
Nuclear and High Energy Physics
Radiation Materials science Silicon business.industry media_common.quotation_subject Pulse duration chemistry.chemical_element Plasma Laser Pulse (physics) law.invention Optics chemistry law Contrast (vision) Plasma diagnostics business QC Line (formation) media_common |
| Zdroj: | High Energy Density Physics. 38:100924 |
| ISSN: | 1574-1818 |
| Popis: | The interaction of high-power short lasers with solid density targets is an important application of modern solid state lasers. However, uncertainties in measurements due to lack of information on the laser pedestal-to-peak contrast limits the validity of many conclusions. We show that X-ray spectral measurements can provide a straightforward way for accessing the laser pedestal-to-peak contrast. The experiments use silicon targets and relativistic laser intensities of 3 × 1020 W/cm2 with a pulse duration of 1 ps. By not using or using a plasma mirror we compare low and high contrast measurements of the Ly-α line and its satellites to show that these lines are an effective laser contrast diagnostic. This diagnostic has potential to reduce uncertainty in future laser-solid interaction studies. |
| Databáze: | OpenAIRE |
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