Analysis of Ti K-shell emission produced from solid targets using nanosecond pulses on the TRIDENT laser facility

Measurements of Ti He-like x-ray emission (4.75 keV) from solid targets irradiated with nanosecond pulses on the TRIDENT laser facility are examined. Relative x-ray emission and conversion efficiency was measured as a function of laser irradiance conditions using a crystal spectrometer and step-filtered charge coupled device and x-ray film. Data on the x-ray emission with and without random phase plates is presented. Difficulties and caveats in the diagnostic techniques are also presented. Analysis of step-filtered data suggests a high-energy x-ray tail.

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