Diagnostics and Improvement of the Velocity and Density Characteristic of Deuterium/Hydrogen Supersonic Molecular Gas Jet
Diagnostics and Improvement of the Velocity and Density Characteristic of Deuterium/Hydrogen Supersonic Molecular Gas Jet
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氘/氢超音速分子气体射流速度和密度特性的诊断与改进
DOI：
10.1007/s10894-018-0208-8
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发表时间：
2019-04
影响因子：
1.1
通讯作者：
Han Jifeng
中科院分区：
文献类型：
--
作者：
Chen Zhiyuan;Li Min;Zhou Maolei;Liu Dong;Qu Guofeng;Wang Yizhou;Han Jifeng
采用一种基于传声器的简单方法，对氘、氢超声分子束的详细演化过程进行了研究。通过飞行时间法测量了光束的速度，并通过比较SMB的径向轮廓与气体射流中的分子总量来研究密度。从圆柱形喷嘴产生的氘SMB的速度和数密度在轴向距离为1700 mm和滞止压力为50 bar时被测试为1100 m/s和3.6E15 cm-3，这比从相同喷嘴产生的氢SMB的速度和数密度低约30%，并且与氘气射流中比氢小30%的分子总数一致。结果表明，采用圆柱形喷管和特殊撇渣器可使SMB中心密度提高约150%和45%，而采用锥形喷管可使SMB中心速度提高约13%，这些结果对SMB诊断和核聚变实验的加料具有重要的指导意义。
The detailed evolution process of deuterium and hydrogen supersonic molecular beam (SMB) was probed by one simple method based on the microphone. The velocity of the beam was measured by time-of-flight method, and the density was investigated by comparing the radial profiles of the SMB with the total amounts of molecules in the gas jet. The velocity and number density of deuterium SMB generated from a cylindrical nozzle were tested to be 1100 m/s and 3.6E15 cm−3at axial distance of 1700 mm and stagnation pressure of 50 bar, which was about 30% lower than that of hydrogen SMB generated from the same nozzle, and was in consistent with the total number of molecules in deuterium gas jet that was 30% smaller than hydrogen. It is found that the use of a cylindrical nozzle and arrangement of a special skimmer can increase the central density of SMB by about 150% and 45%, while the utilization of one conical nozzle would increase the velocity of the SMB by 13%, these results could give great help in the SMB diagnostics and fueling of the nuclear fusion experiments.
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超音速湍流边界层中的同步密度和速度测量
影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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