高灵敏度瞬态辐射高温计

罗教明

doi:10.11858/gywlxb.1997.01.007

高灵敏度瞬态辐射高温计

doi: 10.11858/gywlxb.1997.01.007

罗教明^1,2,

1.
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；
2.
北京应用物理与计算数学研究所，北京 100081

详细信息

通讯作者:
罗教明

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出版历程
- 收稿日期: 1996-10-23
- 修回日期: 1996-10-23
- 发布日期: 1997-03-05

A High Sensitive Transient Optic Pyrometer

LUO Jiao-Ming^{1,2
,}

1.
Laboratory for Shock Wave and Detonation Physics Research, Southwest Institute of Fluid Physics, Chengdu 610003, China;
2.
Institute of Applied Physics and Computational Mathematics, Beijing 100081, China

More Information

Corresponding author: LUO Jiao-Ming

摘要

摘要: 新研制了一台瞬态辐射高温计。它在设计上做了以下改进，采用：（1）双向色性分光镜作为分光器件，将各个通道波长的分光率提高到85%以上；（2）低输入阻抗宽频高增益（50 dB）信号放大技术做为高温计的后续电路，大大提高了高温计的探测灵敏度，同时也保证了测量系统的快速响应；（3）光谱辐照度方法做零前标定，使零前标定工作方便和可靠。以氯化钠单晶作为实例，测量了它在36.0~60.0 GPa冲击压力下的热辐射历史，获得了1 500~3 600 K冲击温度范围内的瞬态光谱辐射，高温计的响应时间优于5 ns。
- 双向色性分光镜 /
- 高温计 /
- 热辐射 /
- 冲击温度
Abstract: A new pyrometer has been developed, which uses: (a) dichroic splitters as pyrometer beamsplitters which increases the splitter efficient from about 25% (for a half-transmit half-reflect beamsplitter) to about 85%; (b) 50 dB amplifiers with an input electrical resistance less than 100 and response time less than 5 ns improve the response of the original version of the pyrometer, and (c) a tungsten standard lamp as the pre-experimental calibration standard light irradiance source which makes the pre-shot calibration more convenient and reliable. As an example to test its ability, temperature measurements for single crystal sodium chloride shocked to pressures from 36 to 60 GPa were conducted, temperatures of 1 500K to 3 600 K were calculated from the recorded light radiance signals.
- dichroic splitter /
- optic pyrometer /
- thermal radiation /
- shock temperature