Spatially-resolved spectroscopic diagnosing of aluminum wire array Z-pinch plasmas on QiangGuang-I facility
Spatially-resolved crystal spectrometers with a high spectral resolution are developed to diagnose K-shell x-ray radiation from Z-pinch plasmas. These diagnostic apparatuses are successfully applied to aluminum wire array Z-pinch experiments on QiangGuang-I facility, a driver with a pulsed current u...
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Published in | Chinese physics B Vol. 19; no. 7; pp. 377 - 381 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
IOP Publishing
01.07.2010
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Subjects | |
Online Access | Get full text |
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Summary: | Spatially-resolved crystal spectrometers with a high spectral resolution are developed to diagnose K-shell x-ray radiation from Z-pinch plasmas. These diagnostic apparatuses are successfully applied to aluminum wire array Z-pinch experiments on QiangGuang-I facility, a driver with a pulsed current up to about 1.5 MA in 80 ns. Time-integrated experimental results show that the K-shell x-ray emission lines of aluminum Z-pinch plasmas are dominated by line emissions from helium-like ionisation state. Bright spots that might have higher electron temperature or density are produced randomly in location and size along the z-axis during implosions. According to the experimental data, the electron temperature and the ion density are estimated to be between 250 eV and 310 eV, and between 7.0× 10^19 cm-3 and 4.0 ×10^19 cm-3 respectively, while the ion temperature is inferred to be about 10.2 keV, which is much higher than the electron temperature. |
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Bibliography: | Z-pinch, wire array, x-ray spectroscopy, spatially-resolved crystal spectrometer O53 TL631.22 11-5639/O4 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1674-1056 2058-3834 |
DOI: | 10.1088/1674-1056/19/7/075204 |