Strong Kα Emission in Picosecond Laser-Plasma Interactions

B. Soom; H. Chen; Y. Fisher; D. D. Meyerhofer

doi:10.1364/SWV.1993.STI192

Shortwavelength V: Physics with Intense Laser Pulses
Technical Digest Series (Optica Publishing Group, 1993),
paper STI192
•https://doi.org/10.1364/SWV.1993.STI192

Strong K_α Emission in Picosecond Laser-Plasma Interactions

B. Soom, H. Chen, Y. Fisher, and D. D. Meyerhofer

Shortwavelength V: Physics with Intense Laser Pulses 1993

San Diego, California United States
29–31 March 1993
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Solid Target Interaction (STI)

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B. Soom, H. Chen, Y. Fisher, and D. D. Meyerhofer, "Strong Kα Emission in Picosecond Laser-Plasma Interactions," in Shortwavelength V: Physics with Intense Laser Pulses, Technical Digest Series (Optica Publishing Group, 1993), paper STI192.

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Abstract

K_α emission is observed from the interaction of a picosecond, 1.05-μm laser pulse at 4 × 10¹⁵ W/cm² with a silicon target coated with various thicknesses of aluminum. Strong K_α emission requires a p-polarized, high-intensity-contrast laser pulse. At 7.1 Å, the K_α yield is 1.5 × 10⁸ photon/sr with a duration of emission of ~8 ps and a source area of 1.6 × 10^‒⁶ cm². The radiance is ~3 × 10⁹ W/cm² sr. Monte-Carlo simulations have suggested that under these conditions K_α emission is a promising candidate to obtain an efficient, ultrashort x-ray source at ~1.5 Å.

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