Point projection radiography with the flexible x-ray imager
| Autor: | Ted Perry, D. Hargrove, A. Nikitin, J. R. Mazuch, S. A. Alvarez, K. S. Budil, Perry M. Bell |
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| Rok vydání: | 1997 |
| Předmět: | |
| Zdroj: | Review of Scientific Instruments. 68:796-798 |
| ISSN: | 1089-7623 0034-6748 |
| DOI: | 10.1063/1.1147744 |
| Popis: | Radiography techniques utilizing large-area x-ray sources (typically ⩽7 keV) and pinhole-imaging gated x-ray diagnostics have long been used at the Nova laser facility. However, for targets requiring higher-energy x-ray backlighters (>9 keV), low conversion efficiencies and pinhole losses combine to make this scheme unworkable. The technique of point projection radiography has been improved upon to make imaging at high x-ray energies feasible. In this scheme a “point” source of x-rays, usually a small diameter (⩽25 μm) fiber, is illuminated with a single, 100-ps pulse from the Nova laser. A gated x-ray imager with a 500-ps electronic gate width is used to record the projected image. [K. S. Budil et al., Rev. Sci. Instrum. 67, 485 (1996).] The experimental challenges this technique presents and experimental results will be discussed. |
| Databáze: | OpenAIRE |
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