Abstract Details
Perspective for High Energy Density Studies using X-ray Free Electron Lasers
Author: RIchard W. Lee
Requested Type: Oral Only
Submitted: 2009-04-21 11:51:23
Co-authors: B. Nagler, U. Zastrau, R. Fäustlin, S. M. Vinko, T. Whitcher, R. Sobierajski, J. Krzywinski, L. Juha, A. J. Nelson, S. Bajt, T. Bornath, T. Burian, J. Chalupsky, H. Chapman, J. Cihelka, T. Döppner, T. Dzelzainis, S. Düsterer, M. Fajardo, E. Förster, C. Fortmann, S. H. Glenzer, S. Gue, G. Gregori, V. Hajkova, P. Heimann, M. Jurek, F. Y. Khattak, A. R. Khorsand, D. Klinger, M. Kozlova, T. Laarmann, H.-J. Lee, K.-H. Meiwes-Broer, P. Mercere, W. J. Murphy, A. Przystawik, R. Redmer, H. Reinholz, D. Riley, G. Roke, K. Saksl, R. Thiele, J. Tiggesbumker, S. Toleikis, T. Tschentscher, I. Uschmann, and J. S. Wark
Contact Info:
Lawrence Livermore National Laboratory
PO Box 808
Livermore, CA 94550
USA
Abstract Text:
A general overview of the potential for both warm and hot dense matter research for the future on X-ray FELs will be presented. First, a discussion of the regime defined as relevant to warm dense matter will be attempted in terms of the underlying physical phenomena that define the field. Next a categorization of the facilities to be included in the perspective will be given. With this as background a series of schematic experiments will be discussed with respect to the facilities where they will be pursued. Comments on the interaction amongst the various experiments and between the various facilities will be outlined.
Finally, a report will be given of the x-ray absorption and spectroscopy of Warm Dense Matter experiments at the FLASH Free Electron Laser (FEL) facility at DESY. The FEL beam is used to produce Warm Dense Matter with soft x-ray absorption as the probe of electronic structure. A multilayer-coated parabolic mirror focuses the FEL radiation, to spot sizes as small as 0.3µm in a ~15fs pulse of containing >1012 photons at 13.5 nm wavelength, onto a thin sample. Silicon photodiodes measure the transmitted and reflected beams, while spectroscopy provides detailed measurement of the temperature of the sample. The goal is to measure over a range of intensities approaching 1018 W/cm2. Experimental results will be presented along with theoretical calculations.
Comments: