Dense Matter Characterization by X-ray Thomson Scattering.

Landen, O. L. ; Glenzer, S. H. ; Edwards, M. J. ; Lee, R. W. ; Collins, G. W. ; Cauble, R. C. ; Hsing, W. W. ; Hammel, B. A.

Technical Information Center Oak Ridge Tennessee

关键词: X-ray scattering;    Dense plasmas;    Scattering;    Rayleigh scattering;    Compton effect;   

RP-ID  :  DE200515013215

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We discuss the extension of the powerful technique of Thomson scattering to the x-ray regime for providing an independent measure of plasma parameters for dense plasmas. By spectrally-resolving the scattering, the coherent (Rayleigh) unshifted scattering component can be separated from the incoherent Thomson component, which is both Compton and Doppler shifted. The free electron density and temperature can then be inferred from the spectral shape of the high frequency Thomson scattering component. In addition, as the plasma temperature is decreased, the electron velocity distribution as measured by incoherent Thomson scattering will make a transition from the traditional Gaussian Boltzmann distribution to a density-dependent parabolic Fermi distribution to. We also present a discussion for a proof-of-principle experiment appropriate for a high energy laser facility.