Shock temperature of NaCl measured with wide-band optical radiometry

被引:0
|
作者
Ogura, T [1 ]
Nakamura, KG [1 ]
Takenaka, H [1 ]
Kondo, K [1 ]
机构
[1] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, Japan
来源
SHOCK COMPRESSION OF CONDENSED MATTER-2001, PTS 1 AND 2, PROCEEDINGS | 2002年 / 620卷
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中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Shock temperature of NaCl was measured with time-resolved (3-nanosecond resolution) wide-band optical radiometry observing the radiation ranging from 0.6 to 13 mum in the pressure range between 17 and 43 GPa. In case of samples above 2000 K, the emitted radiation was measured with a visible to near-IR radiometer (0.6-1.6 pm). This radiation associated with a phase transition which arises at the defect sites such as dislocations. An IR radiometer sensitive to 9-13 mum was used to measure the bulk temperature below 1000 K. In the mixed-phase region between 23 and 33 GPa, thermal heterogeneity was observed in shock-loaded NaCl. In the low-pressure phase (B1) between 17 and 21 GPa, the shock temperature obtained with IR radiometer was almost 400 K lower than the values obtained by Fritz et al.
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页码:1215 / 1218
页数:4
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