Diagnosis of electromagnetic properties and light flash characteristics created by hypervelocity impact\m{1}
Diagnosis of electromagnetic properties and light flash characteristics created by hypervelocity impact\m{1}
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DOI：
10.3233/jae-2012-1431
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发表时间：
2012
影响因子：
0.6
通讯作者：
Enling Tang;Qingming Zhang;Shenghai Xiang;Minghai Yang;Fu-sheng Liu;Mingjian Zhang
中科院分区：
文献类型：
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作者：
Enling Tang;Qingming Zhang;Shenghai Xiang;Minghai Yang;Fu-sheng Liu;Mingjian Zhang
为了诊断超高速碰撞产生的电磁特性和闪光特性，建立了扫描朗缪尔探针（SLP）和三重朗缪尔探针（TLP）等离子体电子温度和电子密度诊断系统，利用建立的线圈测量系统获得了磁场特性，并通过光学高温计测量系统获得了超高速碰撞全物理过程中闪光的特性，实验结果表明，在整个物理过程中，三重探针的平均电子温度接近0.75 eV，实验中的平均电子密度约为0.75 eV。然而，使用扫描朗缪尔探针获得的等离子体的电子温度和电子密度低于使用三朗缪尔探针的值。超高速撞击过程中等离子体产生的磁感应强度峰值为9.8 × 10 ~ 6/cm，在本文实验条件下产生的闪光强度峰值为40-50 mW.cm-2.nm-1。
In order to diagnose electromagnetic properties and light flash characteristics generated by hypervelocity impact, the diagnostic systems of sweep Langmuir probe(SLP) and triple Langmuir probe (TLP) for electron temperature and electron density in plasma were established, properties of magnetic field were obtained by using coil measurement system established, and characteristics of light flash were also acquired through optical pyrometer measurement system during the whole physical process in hypervelocity impact, Experimental results showed that the average electron temperature of the triple Langmuir probe was near 0.75 eV on the whole physical process, the average electron density in the experiment was about. However, the electron temperature and electron density of plasma acquired by using t he sweep Langmuir probe were lower than the values by using triple Langmuir probe. The peak value of magnetic induction intensity induced by plasma was 9.8 × 10/cm during the hypervelocity impacts, and light flash intensity peak value was 40–50 mW.cm−2.nm−1 in the experimental conditions in the paper.