The atomic response to 10$^{18}$ W/cm$^2$ x-rays from the LCLS

POSTER

Abstract

The goal of this experiment was to characterize the response of a prototypical atom, neon, to the unprecedented flux of microfocussed x-rays produced at the Linac Coherent Light Source (LCLS) at the SLAC Linear Accelerator Laboratory. In agreement with results from theoretical modeling, we find atoms inside the focal volume to undergo multiple successive ionization events, leading to fully stripped Ne$^{10+}$ at 2-keV x-ray energies, and charge states up to Ne$^{8+}$ below the {\em K}-ionization threshold. We also observe photoproduction of hollow neon ions through successive {\em K}-shell ionization on timescales shorter than Auger decay. We demonstrate intensity-induced x-ray transparency as a consequence of ever slower vacancy decay clocks limiting an ion's consecutive {\em K} absorption within a single 200-fs x-ray pulse.

*Work supported by the U.S. Department of Energy, Office of Basic Energy Sciences.

Authors

  • B. Kr\"assig

    • Argonne National Laboratory

  • E.P. Kanter

    • Argonne National Laboratory

  • A.M. March

    • Argonne National Laboratory

  • Y. Li

    • Argonne National Laboratory

  • Stephen Pratt

    • Argonne National Laboratory

  • Robin Santra

    • Argonne National Laboratory
    • Argonne National Laboratory, Argonne, Illinois 60439, USA; Department of Physics, University of Chicago, Chicago, Illinois 60637, USA

  • S.H. Southworth

    • Argonne National Laboratory

  • Linda Young

    • Argonne National Laboratory

  • N. Rohringer

    • Lawrence Livermore National Laboratory

  • Nora Berrah

    • Western Michigan University

  • Li Fang

    • Western Michigan University
    • LCLS and Western Michigan University

  • Matthias Hoener

    • Western Michigan University

  • L. DiMauro

    • Physics Department, Ohio State University, Columbus, OH, 43210
    • Ohio State University

  • Gilles Doumy

    • Ohio State University
    • The Ohio State University

  • C.A. Roedig

    • Ohio State University

  • Philip Bucksbaum

    • SLAC National Accelerator Laboratory, Stanford University
    • PULSE Institute at the SLAC National Accelerator Laboratory
    • PULSE Stanford
    • PULSE Institute for Ultrafast Energy Science, SLAC National Accelerator Laboratory, Menlo Park, CA 94025

  • J.P. Cryan

    • PULSE Stanford

  • S. Ghimire

    • PULSE Stanford

  • James Glownia

    • PULSE Stanford
    • The PULSE Institute, SLAC National Accelerator Lab

  • D.A. Reis

    • PULSE Institute and Departments of Photon Science and Applied Physics SLAC/ Stanford University, Menlo Park, CA, 94025
    • PULSE Stanford

  • M. Messerschmidt

    • SLAC

  • C. Bostedt

    • SLAC

  • J.D. Bozek

    • SLAC National Accelerator Laboratory
    • SLAC