金属冲击温度测量中金属/窗口界面表观光谱辐亮度的再研究

汤文辉; 张若棋; 胡金彪; 经福谦

doi:10.11858/gywlxb.1995.04.004

金属冲击温度测量中金属/窗口界面表观光谱辐亮度的再研究

doi: 10.11858/gywlxb.1995.04.004

1.
国防科技大学应用物理系，湖南长沙 410073；
2.
中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室，四川成都 610003

详细信息

通讯作者:
汤文辉

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出版历程
- 收稿日期: 1995-03-27
- 修回日期: 1995-03-27
- 刊出日期: 1995-12-05

Review of the Apparent Spectral Radiance from the Metal/Window Interface in the Measurement of Shock Temperature of Metals

1.
Department of Applied Physics, National University of Defense Technology, Changsha 410073, China;
2.
Laboratory for Shock Wave and Detonation Physics Research, Southwest Institute of Fluid Physics, Chengdu 610003, China

More Information

Corresponding author: TANG Wen-Hui

摘要

摘要: 在冲击压缩下，理想接触的金属/窗口界面温度历史是时间无关的，因而一般认为界面的表观光谱辐亮度也是时间无关的。研究表明：（1）在冲击压缩下，将伴随金属对光的吸收系数减小和光学厚度增大。因此，在考虑辐射输运效应后，理想接触的金属/窗口界面处的表现光谱辐亮度是时间相关的。非常明显的时间相关过程自冲击波到达界面后持续约10 ns。（2）若把存在空间温度梯度的金属界面辐射看作是透光厚度内平均温度的等效辐射效应，其结果与辐射输运效应的计算结果是很相近的。
- 冲击压缩 /
- 光谱辐射 /
- 辐射输运 /
- 光学厚度
Abstract: It was shown that the temperature at the shocked ideal metal/window interface is a constant of time independent, so the apparent spectral radiance from the interface was alto regarded as time independent. This study indicates that the coefficient for light absorption of a metal decreases and the optical depth increases with shock compression. After in consideration of radiative transfer effective, the apparent spectral radiance from the ideal metal/window interface is actually time dependent, and the noticeable process with time keeps about ～10 ns since the arrival of the shock wave at this interface. This study also shows that the interface radiation of a metal in which the temperature distribution has a gradient could be treated as an equivalent radiation of an average temperature in the optical depth, a similar result as that derived from radiative transfer equation is obtained.
- shock compression /
- spectral radiance /
- radiative transfer /
- optical depth

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参考文献(13)

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