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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Blesener, I.C. Bell, K.S. Chalenski, D.A. Greenly, J.B. Knapp, P.F. McBride, R.D. Schrafel, P.C. Hammer, D.A. Kusse, B.R. |
| Copyright Year | 2008 |
| Description | Author affiliation: Cornell Univ. Ithaca, Ithaca, NY (Blesener, I.C.; Bell, K.S.; Chalenski, D.A.; Greenly, J.B.; Knapp, P.F.; McBride, R.D.; Schrafel, P.C.; Hammer, D.A.; Kusse, B.R.) |
| Abstract | Summary form only given. X pinch backlighting is a useful imaging technique whereby two or more wires are crossed at a single point and driven with a high current (300-500 kA). At the crossing point, a micron-scale sub-nanosecond X-ray source is produced that acts as a point source and can be used for point-projection imaging. Three new modes of X pinch imaging on COBRA have been implemented. One of these techniques involves coupling the point-projection imaging with an MCP camera. This method is in development in the hopes that it can be used to take high resolution images of imploding (i.e. strongly radiating) wire-array Z pinches by time-gating out the radiation from the Z pinch. Previous attempts resulted in low contrast, blurry images. Presented here are new results which show an improvement in image quality. Another recent development involves a new large format imaging camera which allows point-projection imaging with high magnification. This new camera can be used to take backlighting images of wire arrays with ~34times magnification. Presented here are recent images of dense wire cores and coronal plasma, both showing significant axial modulation. Finally, for the first time on COBRA, a technique is in development for end-on X pinch backlighting. Preliminary results from this new method will be presented. |
| Starting Page | 1 |
| Ending Page | 1 |
| File Size | 71455 |
| Page Count | 1 |
| File Format | |
| ISBN | 9781424419296 |
| ISSN | 07309244 |
| DOI | 10.1109/PLASMA.2008.4591100 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-06-15 |
| Publisher Place | Germany |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Imaging Cameras Wires Plasmas Arrays Modulation Couplings |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering |
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