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X-Ray Radiation Characteristics of Nested-Wire Array Implosion in Sino-Russian Joint Z-pinch Experiments on Angara-5-1 |
| XU Rong-Kun1;LI Zheng-Hong1;NING Jia-Min1;GUO Cun1;XU Ze-Ping1;YANG Jian-Lun1;LI Lin-Bo1;XIA Guang-Xin1;HUA Xin-Sheng1;DING Ning1;LIU Qiang1;GU Yuan-Chao1;E. V. Grabovsky2;G. M. Oleynic2;S. L. Nedoseev2;V. V. Alexandrov2;K. N.Mitrofanov2;M. V. Zurin2;G. S. Volkov2;I. A. Porofeev2;I. N. Frolov2;V. P. Smirnov2 |
| 1China Academy of Engineering Physics, PO Box 919-212, Mianyang 621900
2Troitsk Institute for Innovation and Thermonuclear Researches, Troitsk 142190, Russia |
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| Cite this article: |
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XU Rong-Kun, LI Zheng-Hong, NING Jia-Min et al 2005 Chin. Phys. Lett. 22 413-415 |
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Abstract We report and discuss the results of x-ray radiation measurements in the Sino-Russian joint Z-Pinch experiments on Angara-5-1 facility with a load current of 2.5--3.6MA. The measurements were conducted by using an x-ray power meter (XRPM) and a time-resolved one-dimensional x-ray imaging system developed in China Academy of Engineering Physics. The experimental results indicate that an x-ray power-platform prior to a main peak and a less intensive sub-peak after the main peak in the waveform exist for the nested-wire array implosions, and the radiation process is relatively faster than that in the case of the single array. Laser shadowgraph of the imploding plasma suggests that the prior power-platform is a result of the collision of the inner-outer plasma layers. The faster radiation process of nested array implosion can be explained by analysing the corresponding result of the time-resolved one-dimensional imaging system, which demonstrates a better axial imploding uniformity and synchronization. In comparison with x-ray diode, the XRPM yields a higher height of x-ray power-platform due to its flat energy response. The sub-peak after the main peak is proposed to be a result of the later-time additional implosion of plasma.
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| Keywords:
52.58.Lq
52.59.Qy
52.70.La
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Published: 01 February 2005
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| PACS: |
52.58.Lq
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(Z-pinches, plasma focus, and other pinch devices)
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52.59.Qy
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(Wire array Z-pinches)
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52.70.La
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(X-ray and γ-ray measurements)
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