A Two-Dimensional, Time-Gated X-ray/EUV Imaging Spectrometer
Abstract
A novel two-dimensional x-ray/EUV imaging spectrometer (2DXIS) has been developed to investigate complex, rapidly-evolving plasmas. This novel device uses glass capillaries to multiplex a two-dimensional image of the plasma into an output array of spatially-separated pixels. This array is then spectrally dispersed by a crystal or a multilayer mirror, recorded by a temporally-gated imager, and reconstituted as an image by a computer. The result is a time-gated spectrum for each image point. Polycapillaries are employed, rather than monocapillaries, for a uniform output angular distribution of captured radition. Modular design allows observation of a wide selection of spectral lines. Efficient computer calculations of resonance and satellite lines analyze the high volume of K-shell/L-shell spectroscopic data. Spatial resolution, field of view, wavelength range, and spectroscopic resolution are chosen to yield time-resolved two-dimensional maps of plasma temperature, density, and ionization state. A 100-channel 2DXIS is being installed on SNL-Z to observe Ti K-shell radiation from imploding-Ti-wire-array z-pinches. Two-dimensional x-ray spectroscopy of other wire materials (Al, Ni, Cu, Mo, W, and Au) will also be developed.
- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- November 1999
- Bibcode:
- 1999APS..DPPQP1103K