Two-dimensional imaging of radiation temperature in dynamicHohlraumson Z
| Autor: | James E. Bailey, Christine Anne Coverdale, C. Deeney, Jose A. Torres, R. J. Leeper, S. Lazier, T. C. Moore, Paul David LePell, D. O. Jobe, T. L. Gilliland, Gordon A. Chandler, J. S. McGurn, R. M. Smelser, B. Stygar, J. F. Seamen, Thomas J. Nash, D. S. Nielsen, J. Pyle |
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| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | Review of Scientific Instruments. 74:2211-2214 |
| ISSN: | 1089-7623 0034-6748 |
| Popis: | We present a technique for experimentally measuring two-dimensional radiation temperatures in dynamic Hohlraums on Z. In principle the technique can be applied to any radiation source. Total radiated power from the source is measured by normalizing the area under an x-ray diode signal to energy yield measured by a bolometer. The radiated power as a function of time, which is just the normalized x-ray diode signal, can then be used to normalize gated microchannel plate x-ray pinhole camera images. The procedure is most accurate when the gated x-ray pinhole camera has the same filter as the x-ray diode and when the filter is transmissive near the peak of the Planckian radiation temperature being measured. We present results for two-dimensional radiation temperatures as a function of time for dynamic Hohlraum experiments on Z. In these experiments a z pinch consisting of nested tungsten wire arrays driven by the 20 MA, 100 ns Z accelerator implodes onto cylindrical foam located on axis. X-ray diodes and bolo... |
| Databáze: | OpenAIRE |
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