SMuK 2023 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 17: Instrumentation III

AKBP 17.3: Talk

Thursday, March 23, 2023, 18:00–18:15, CHE/0183

Characterization of low-density gas targets for wake driven plasma field using high harmonics — •Piet Leyendecker, Marc Osenberg, Dirk Hemmers, Bastian Hagmeister, and Georg Pretzler — Institute of Laser- and Plasmaphysics, University Düsseldorf

Low-density gas jets are a crucial part for wake driven plasma accelerators. Measuring the spatial and temporal density profile is challenging with common methods. Fortunately, the used gases have high and varying absorption rates in the XUV. Using high harmonics, we can detect the absorption for different wavelengths simultaneously. This method allows to determine the gas density even for hydrogen and helium down to the 10¹⁷ cm⁻³ regime. In this talk we will discuss the setup and challenges for this rarely used method, and we show actual results.