Z-Beamlet Point Projection X-Ray Imaging of ICF Implosions in Z Accelerator Z-Pinch-Driven Hohlraums
Abstract
The Z-Beamlet laser backlighter system, a recent addition to Sandia's 20-MA Z accelerator, will be used to point project x-ray image a variety of Z-driven targets (Rev. Sci. Instrum. 72, 657 (2001). and references therein). This laser is a 2-TW, 2-kJ system and when fully commissioned it will have a <50-μm-diam spot size and a four-post picket fence pulse for high-spatial-resolution four-frame imaging. Although the point projection imaging mode forces the image plane detector to view through a large aperture, making it therefore sensitive to both the Bremsstrahlung background and debris characteristic of Z, recent data shows success in overcoming both these problems. In particular, as part of the z-pinch-driven hohlraum high-yield ICF assessment study (Phys. Plasmas. 8, 2257 (2001). and references therein) initial Z-Beamlet-backlit images of imploding ICF capsules have been captured, and will be presented. Sandia is a multiprogram laboratory operated by Sandia Corp., a Lockheed Martin Company, for the USDOE under Contract DE-AC04-94AL85000.
- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- October 2001
- Bibcode:
- 2001APS..DPPLP1111B