Use of the Thin Film Compression (TFC) technique to generate laser-wakefield-based few femtoseconds X-ray probe for ultrafast time-resolved measurements of plasmas

Abstract

We discuss the use of the thin film compression (TFC) technique for generating an ultrafast X-ray beam having a few femtoseconds in duration which could be appropriate for pump and probe experiment. Our results demonstrate the potential of the technique for the generation of a few fs hard X-ray beam through the LWFA-based betatron process, enabling an extraordinary short X-ray probe for doing time resolved X-ray absorption spectroscopy of ultra-relativistic plasmas.