Optical trajectory diagnosis of 1.5MA wire-array Z pinches with fiber coupled streak camera

Z. Wang; J. L. Yang; L. B. Li; R. K. Xu; Z. H. Li

doi:10.1117/12.725080

11 January 2007 Optical trajectory diagnosis of 1.5MA wire-array Z pinches with fiber coupled streak camera

Z. Wang, J. L. Yang, L. B. Li, R. K. Xu, Z. H. Li

Proceedings Volume 6279, 27th International Congress on High-Speed Photography and Photonics; 62790F (2007) https://doi.org/10.1117/12.725080
Event: 27th International congress on High-Speed Photography and Photonics, 2006, Xi'an, China

Abstract

A fiber coupled streak camera is developed and applied in Z-pinch experiments to investigate the optical trajectory of wire-array implosions with one-dimensional (1D) spatial resolution of 100μ~400μ. The 1D image of the imploding plasma is formed by a slit and relayed to a linearly arranged fiber array, which is capable of transmitting the 1D image out from within the vacuum chamber. A mylar film is setup before the fiber array to absorb the X-ray light while transmitting visible light into the fibers, which are coupled to a streak camera. And for X-ray diagnosis the mylar film is substituted by an infra scinllator, which converts X-ray into visible light and relays it into the fiber array. The experiments were performed on QiangGuang-1 facility. With the slit parallel to the axis of the wire array, optical measurement of time-resolved radial distribution of the imploding plasma is carried out as well as diagnosis of X-ray implosion dynamics. The 1D optical trajectory (radius versus implosion time) of imploding plasma is obtained. And some discussions of the experiments are also presented in this letter.

Citation Download Citation

Z. Wang, J. L. Yang, L. B. Li, R. K. Xu, and Z. H. Li "Optical trajectory diagnosis of 1.5MA wire-array Z pinches with fiber coupled streak camera", Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 62790F (11 January 2007); https://doi.org/10.1117/12.725080

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KEYWORDS

X-rays

Plasma

X-ray optics

Streak cameras

Tungsten

Visible radiation

Fiber couplers

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