Conversion efficiency of high-Z backlighter materials.

Area of Science:

• Plasma Physics
• Atomic Physics
• X-ray Science

Background:

• High-Z materials are essential X-ray sources for laser-driven experiments.
• Accurate photon emission data is critical for experimental planning and data analysis.
• L-shell and M-shell emitter conversion efficiency is less understood than K-shell emitters.

Purpose of the Study:

• To present laser conversion efficiency for L- and M-shell emitters.
• To focus on spectral regions suitable for high-energy (>3 keV) absorption spectroscopy.
• To evaluate efficiency across multiple laser intensities.

Main Methods:

• Irradiating high-Z backlighter materials with lasers.
• Measuring X-ray emission from L-shell and M-shell electron transitions.
• Characterizing conversion efficiency within specific spectral subsets (>3 keV).

Main Results:

• Laser conversion efficiency for L- and M-shell emitters was measured.
• Efficiency values ranged from 0.2% to 0.6%.
• Data is relevant for specific spectral regions, not just the entire shell.

Conclusions:

• The study provides crucial data on L- and M-shell emitter efficiency for specific applications.
• This research aids in optimizing X-ray source selection for high-energy spectroscopy.
• Quantified efficiency data supports better experimental design and analysis in laser-plasma interactions.