Abstract Details
Three-dimensional analysis of spectrally-resolved core image data from OMEGA direct-drive implosions
Author: Taisuke Nagayama
Requested Type: Poster Only
Submitted: 2009-04-21 17:21:37
Co-authors: R.C. Mancini, R. Florido, R. Tommasini, J. Koch, J. Delettrez, S.P. Regan, V. Smalyuk, F. Marshall
Contact Info:
University of Nevada, Reno
1664 N. Virginia St.
Reno, Nevada 89557
U.S.A.
Abstract Text:
We discuss the observation and analysis of spectrally-resolved core image data of argon-doped, deuterium-filled OMEGA direct-drive implosions. The core image data were recorded simultaneously along three quasi-orthogonal lines of sight (LOS) using three identical, gated Direct-Drive Multi-Monochromatic x-ray Imagers (DDMMI). The argon x-rays are primarily emitted at the collapse of the implosion, thus its spectrum provides a spectroscopic signature of the state of the imploded core. For each LOS, a set of spatially-resolved argon spectra can be extracted by processing the corresponding DDMMI data. A multi-objective search and reconstruction method finds the electron temperature and density spatial distributions that yield the best simultaneous and self-consistent fits to the given set of spatially-resolved spectra. The resultant spatial distributions of temperature and density are discussed and its consistency is checked using narrow-band core images obtained from the DDMMI data.
Comments: