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arXiv · 2204.11129

L-shell X-ray conversion yields for laser-irradiated tin and silver foils

R. L. Singh·S. White·M. Charlwood·F. P. Keenan·C. Hyland·D. Bailie·T. Audet·G. Sarri·S. J. Rose·J. Morton·C. Baird·C. Spindloe·D. Riley
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Abstract

We have employed the VULCAN laser facility to generate a laser plasma X-ray source for use in photoionisation experiments. A nanosecond laser pulse with an intensity of order ${10}^{15}$ W{cm}$^{-2}$ was used to irradiate thin Ag or Sn foil targets coated onto a parylene substrate, and the L-shell emission in the $3.3-4.4$ keV range was recorded for both the laser-irradiated and non-irradiated sides. Both the experimental and simulation results show higher laser to X-ray conversion yields for Ag compared with Sn, with our simulations indicating yields approximately a factor of two higher than found in the experiments. Although detailed angular data were not available experimentally, the simulations indicate that the emission is quite isotropic on the laser-irradiated side, but shows close to a cosine variation on the non-irradiated side of the target as seen experimentally in previous work.

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R. L. Singh, S. White, M. Charlwood, F. P. Keenan, C. Hyland, D. Bailie, T. Audet, G. Sarri, S. J. Rose, J. Morton, C. Baird, C. Spindloe, D. Riley. 2022-04-23. L-shell X-ray conversion yields for laser-irradiated tin and silver foils. https://arxiv.org/abs/2204.11129

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