Limits on collective X-ray scattering imposed by coherenceG. Gregori, R. Tommasini, O. L. Landen, R. W. Lee and S. H. Glenzer
Lawrence Livermore National Laboratory, University of California P.O. Box 808, CA 94551, USA
received 1 December 2005; accepted in final form 17 March 2006
published online 14 April 2006
We present the calculation of the threshold for observation of collective plasmon modes in a solid density plasma probed with a partially coherent X-ray source. We find that at lower electron densities ( ) de-coherence effects pose a stringent limit to the effective divergence as well as bandwidth of the probe source. These results are more restrictive than the usual condition that the probed scale-length must be larger than the screening distance in the plasma.
42.25.Kb - Coherence.
52.25.Os - Emission, absorption, and scattering of electromagnetic radiation.
52.70.La - X-ray and gamma-ray measurements.
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