29 January 2007 Optical imaging system for wire array Z-pinch on "Qiangguang-I"
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Proceedings Volume 6279, 27th International Congress on High-Speed Photography and Photonics; 627945 (2007) https://doi.org/10.1117/12.725366
Event: 27th International congress on High-Speed Photography and Photonics, 2006, Xi'an, China
Abstract
A time-resolved optical imaging system is developed for "Qiangguang-I" generator to diagnose the early stage of wire array Z-pinch. The optical imaging system is consisted by several independent modules. Each module includes a set of object lens, an image intensifier, a set of relay lens and a CCD camera. The peak response of the system is at 439 nm. The temporal resolution of the system is about 5ns, and the equivalent spatial resolution on the object plane is 6.5 lp/mm when MTF=0.05. A series of images of 12mm diameter 32xΦ5μm tungsten wire array obtained by the system are shown in this paper. We find that in the 32xΦ5 μm wire array experiments on "Qiangguang-I", from the implosion start to 60% of implosion time, the behavior of single wire is dominant. The implosion time is (113±7) ns and the ratio of acceleration time to implosion time ta/timp is about 0.60~0.75. The trailing mass distribution and the m=1 mode instability after the stagnation phase are also observed in our experiments.
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Liang Sheng, Liang Sheng, Min Lv, Min Lv, Kui-lu Wang, Kui-lu Wang, Ai-ci Qiu, Ai-ci Qiu, Dong-wei Hei, Dong-wei Hei, Meng-tong Qiu, Meng-tong Qiu, Fu-li Wei, Fu-li Wei, Yuan Yuan, Yuan Yuan, Pei-wei Wang, Pei-wei Wang, } "Optical imaging system for wire array Z-pinch on "Qiangguang-I"", Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 627945 (29 January 2007); doi: 10.1117/12.725366; https://doi.org/10.1117/12.725366
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