RADIATION TEMPERATURES OF SODA-LIME GLASS IN ITS SHOCK-COMPRESSED LIQUID STATE
RADIATION TEMPERATURES OF SODA-LIME GLASS IN ITS SHOCK-COMPRESSED LIQUID STATE
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钠钙玻璃在冲击压缩液态下的辐射温度
DOI：
10.1063/1.366889
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发表时间：
1998
影响因子：
3.2
通讯作者：
Q. Y. Zhu
中科院分区：
文献类型：
--
作者：
T. Kobayashi;T. Sekine;O. V. Fat’yanov;E. Takazawa;Q. Y. Zhu
用辐射高温计和二级轻气枪测量了钠钙玻璃在54-109 GPa压力范围内的冲击温度。该高温计由两部分组成，即，一个光学多通道分析仪，它测量可见光范围内的辐射光谱（450 nm窗口）和一个四通道光电倍增管系统，它记录冲击温度的时变行为。测量的辐射光谱与普朗克函数进行比较，以估计冲击温度和发射率。得到的光谱很好地符合普朗克函数与中等发射率，表明相对均匀的热辐射的辐射的主要成分。得到的冲击温度范围从2800（100）至5700（300）K，它们似乎代表液化钠钙玻璃（熔体）的冲击温度。Hugoniot可以很好地用线性关系描述，us=0.14（21）+1.92（5）km/s。由此推断，液体在冲击波作用下的辐射是压缩的。
A radiation pyrometer in conjunction with a two-stage light gas gun has been used to measure shock temperatures of soda-lime glass in the pressure range 54–109 GPa. This pyrometer consists of two parts, i.e., an optical multichannel analyzer which measures the radiation spectrum over the visible range (∼450 nm window) and a four-channel photomultiplier tube system which records the time-varying behavior of shock temperatures. The measured radiation spectra are compared with the Planck function to estimate the shock temperatures and emissivities. Obtained spectra are well fit by the Planck function with moderate emissivities, indicating that relatively homogeneous thermal radiation is the main component of radiation. Obtained shock temperatures range from 2800 (100) to 5700 (300) K and they seem to represent shock temperatures of liquefied soda-lime glass (melt). The Hugoniot is well described by a linear relation, us=0.14(21)+1.92(5)up km/s. It is deduced that the radiation from liquids under shock compre...