X-ray Thomson Scattering using the Hybrid X-pinch X-ray Source

POSTER

Abstract

Stringent photometric and bandwidth requirements have historically relegated X-ray Thomson scattering (XRTS) probe sources to high energy laser plasma sources or free electron lasers. Standard x-pinch configurations in which two or more fine wires cross and subtend an angle of about 30$^{\circ}$ forming an ``X'' between the anode and cathode of a pulsed power generatorcan produce extremely bright, subnanosecond bursts of continuum and line radiation from micron-scale sources. The hybrid x-pinch is a new configuration based on conical W-Cu alloy electrodes with a short 1-2mm gap that is bridged by a fine wire resulting in an easier to load setup with improved performance characteristics. We explore the possibility of utilizing the hybid x-pinch as a novel XRTS probe source by examining certain spectral and temporal attributes of a range of materials in a hybrid x-pinch configuration on the XP (500kA, 50ns) and COBRA(1MA, 100ns) pulsed power generators. We find that a Ti hybrid x-pinch produces \textgreater 10$^{12}$ photons/sr in Ti He-alpha radiation and satisfies the noncollective scattering bandwidth requirement. Measurements of photon fluence, bandwidth and applicability to the relevant scattering regime and initial scattering results will be presented.

Authors

  • Cad Hoyt

    • Cornell University
  • Sergei Pikuz

    • Cornell University
  • Tania Shelkovenko

    • Cornell University
  • Dave Hammer

    • Cornell University