15-19 April 2018
Paradise Point Resort & Spa
America/Los_Angeles timezone

14.41 Development and characterization of liquid argon and methane microjets for high-rep-rate laser-plasma experiments

19 Apr 2018, 10:30
2h 1m
Paradise Point Resort & Spa

Paradise Point Resort & Spa

1404 Vacation Rd, San Diego, CA 92109

Speakers

Jongjin Kim (SLAC National Accelerator Laboratory) Christopher Schoenwaelder (SLAC National Accelerator Laboratory) Siegfried Glenzer (Schoenwaelder)

Description

A cryogenic microjet system has been used for delivering microns-scale continuous liquid hydrogen targets for laser-plasma experiments. This technique has been extended to higher-Z, higher boiling-point gases, including argon and methane. High-resolution shadowgraphy has been used to characterize the jets morphology and pointing stability. A split and delay illumination source has also been developed for direct measurement of jet speeds without relying on assumptions of fluid flow conditions. Under typical conditions the argon jets freeze solid due to evaporative cooling, but the methane jets remain liquid and break up to a droplet stream. A piezo driver is used to ensure the droplets are of uniform size. This jet has enabled the investigation of methane in planetary core conditions with high-rep-rate laser heating and x-ray laser probing.

Primary author

Jongjin Kim (SLAC National Accelerator Laboratory)

Co-authors

Christopher Schoenwaelder (SLAC National Accelerator Laboratory) Siegfried Glenzer (Schoenwaelder)

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