Physics
Scientific paper
Jun 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994htpd.confr...8r&link_type=abstract
Presented at the 10th Topical Conference on High-Temperature Plasma Diagnostics, Rochester, NY, 8-12 May 1994
Physics
Image Processing, Imaging Techniques, Plasma Control, Plasma Density, Plasma Diagnostics, Plasmas (Physics), X Ray Imagery, X Rays, Coding, Controlled Fusion, Inertial Confinement Fusion, Nova Laser System, Signal To Noise Ratios, X Ray Apparatus
Scientific paper
We are pursuing several novel x-ray imaging schemes to measure plasma parameters in inertial-confinement fusion experiments. This paper will review two quite successful approaches, the soft x-ray moire deflectometer, and the annular (ring) coded-aperture microscope. The deflectometer is the newer diagnostic, and this paper will concentrate on this topic. We will describe the operating principles of moire deflectometry, give the motivations for soft x-ray probing, describe the physical apparatus in detail, and present some sample images and results. The ring coded-aperture microscope has been described previously, so here we will only briefly review the principle of the instrument. We will concentrate on the signal-to-noise ratio calculations that motivate the use of annular coded apertures, and describe recent work to predict and measure the resolution of the instrument.
Bradley David K.
Dasilva L. B.
Lerche Richard A.
London Richard A.
Ress D.
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