Characterization of argon arc source in the infrared
Characterization of argon arc source in the infrared
复制标题
氩弧源的红外表征
DOI：
10.1088/0026-1394/32/6/45
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发表时间：
1995
期刊：
影响因子：
2.4
通讯作者：
A. Migdall
中科院分区：
文献类型：
--
作者：
J. Bridges;A. Migdall
研究了一种壁稳弧源作为近红外和中红外光谱范围的辐射源。这种电弧与氩微弧类似，后者已被用作紫外线的辐射源。弧在红外（IR）范围内的潜在用途源于它在该区域的高亮度。该电弧已作为最近建造的用于校准红外探测器的设备的源进行了测试。超过范围3 ？从M点到11点？m时，该光源的信号比1500 K陶瓷元件的信号大6到17倍，尽管电弧的光束在角度范围上较小。光源的亮度从1,6 ？10点到10点，还是6点？通过1140k的黑体。在这个光谱范围的大部分范围内，弧线的亮度等于温度在5000k到10000k之间的黑体的亮度。从1 ？从M到3 ？m，相对高分辨率的光谱扫描显示出以强Ar - I线发射为主的光谱。最后，测量了辐照度作为电弧电流和光源平移位置的函数。
A wall-stabilized arc source is being investigated as a radiometric source for the near- and mid-infrared spectral range. This arc is similar to the argon mini-arc, which has been used as a radiometric source in the ultraviolet. The potential usefulness of the arc in the infrared (IR) range stems from its high brightness in this region. The arc has been tested as a source for a recently constructed facility for calibrating IR detectors. Over the range 3 ?m to 11 ?m, the signals with this source were greater by a factor of 6 to 17 than the signals from a 1500 K ceramic element, despite the beam from the arc being smaller in angular extent. The radiance of the source was calibrated from 1,6 ?m to 10,6 ?m via a 1140 K black body. Over most of this spectral range the radiance of the arc is equal to that of black bodies ranging in temperature from 5000 K to 10000 K. From 1 ?m to 3 ?m, a spectral scan with relatively high resolution shows a spectrum dominated by strong Ar I line emission. Finally, measurements were made of radiance as a function of arc current and translational position of the source.