| X-Ray Radiation Characteristics of Nested-Wire Array Implosion in Sino-Russian Joint Z-pinch Experiments on Angara-5-1 |
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| 作者姓名： | 徐荣昆 李正宏 宁佳敏 郭存 许泽平 杨建伦 李林波 夏广新 毕欣生 丁宁 刘强 顾元朝 E.V.Grabovsky G.M.Oleynic S.L.Nedoseev V.V.Alexandrov K.N.Mitrofanov M.V.Zurin G.S.Volkov I.A.Porofeev I.N.Frolov V.P.Smirnov |
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| 作者单位： | [1]ChinaAcademyofEngineeringPhysics,POBox919-212,Mianyang621900 [2]TroitskInstituteforInnovationandThermonuclearResearches,Troitsk142190,Russia |
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| 摘 要： | 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 fiat 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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| 关 键 词： | Z-箍缩 X-线放射特征 测量方法 激光投影 等离子体 |
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