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Four types of wire-arrays were investigated in Z-pinch experiments on JULONG-I, in which axially resolved x-ray radiations were measured by using one-dimensional imaging system. X-ray radiations rose up significantly later near electrodes than at other main positions. The radiation intensity was weaker near anode than other positions. The optimized value of product of wire-array line mass and the...
The Z-pinch dynamic hohlraum (ZPDH) is one of high-power X-ray sources that has been used in a variety of high energy-density experiments including inertial confinement fusion (ICF) studies. Dynamic hohlraums driven by a 12-mm and a 18-mm-diameter single tungsten wire arrays embedded with a C16H20O6 foam, respectively, exhibit no visible differences in radiation from the axial exit, although the radial...
The interaction of a light tungsten wire-array Z-pinch with an embedded heavy foam converter, which mass ratio is typically less than 0.16, is numerically analyzed and experimentally investigated on the 1.3MA “QiangGuang I” facility. Computational results show that this implosion process can be divided into three stages: acceleration of the tungsten wire-array plasma, collision, and stagnation. The...
We compare three lightpath routing and spectrum allocation algorithms for the flexi-grid optical transport networks. The three algorithms include shortest path first algorithm, grid-plane-based first-fit algorithm, and grid-plane-based exhaustive algorithm. We evaluate the performance of these algorithms through simulations. It is found that the grid-plane-based algorithms can achieve much better...
Summary form only given. A sensitive time-resolved one-dimensional X-ray imaging system with linear energy response to 100 eV-2 keV X-rays is developed and applied in Z-Pinch experiments to investigate axial or radial variation characteristics of time dependent X-ray radiation with spatial resolution of 0.1 mm-0.4 mm and temporal resolution of 3 ns. In gas-puff experiment on Qiang-Guang-1 facility,...
X-ray radiation characteristics of nested wire array implosions were investigated in the Sino-Russian joint Z-Pinch experiments on Angara-5-1 facility with a load current of 2.5 ~ 3.6 MA. The experimental results indicate that an X-ray power-platform prior to the main peak and a less intensive sub-peak after the main peak in the X-ray power waveform exist for the nested wire array implosions, and...
Measurements of spatial shape of wire array produced Z-pinch is described. Nonsymmetry of the cathode and anode regions of pinch was observed. According to different spectra of X-ray emission emissive aria separates on two zones. For a single array an analogue of a ≪zipper effect≫ is observed: a hot zone appears at the cathode and expands towards the anode.
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