Extreme ultraviolet diagnostics of preformed plasma in laser-driven proton acceleration experiments
- Division of Optics, P. N. Lebedev Physical Institute, Russian Academy of Sciences, 53 Leninskii Prospekt, 119991 Moscow (Russian Federation)
Proton acceleration experiments involving a 5 {mu}m thick Ti foil target irradiation are carried out with the femtosecond Ti:sapphire laser JLITE-X. The plasma emission at 13.5 nm is recorded employing concave multilayer mirrors, which image the front- and rear-side plasmas onto the sensitive surfaces of a fast x-ray photodiode and a backside-illuminated charge coupled device. Online time-of-flight fast-particle measurements are performed simultaneously with the extreme ultraviolet (XUV) measurements. A strong correlation is observed between the energetic proton signal and the spatiotemporal behavior of the XUV plasma emission. In particular, the longer duration of the prepulse-produced XUV plasma emission indicates a lowering of the maximum proton energy. This allows using the XUV emission for the diagnostics of the high-intensity laser-solid-target interaction.
- OSTI ID:
- 20951073
- Journal Information:
- Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 12 Vol. 77; ISSN 0034-6748; ISSN RSINAK
- Country of Publication:
- United States
- Language:
- English
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