Harber R A, Sonnek G E
ITT Industrial Laboratories, Fort Wayne, Indiana 46803, USA.
Appl Opt. 1966 Jun 1;5(6):1039-43. doi: 10.1364/AO.5.001039.
Spectral scanning is accomplished in an electronic scanning spectrometer by means of a television-type camera tube called an image dissector. Since the scanning is done electronically, extremely rapid spectral scanning can be performed without any mechanical movement. The standard instrument has selectable scan rates of 100 or 1000 spectral scans per second, although faster and slower scan rates are possible. The sensitivity of the spectrometer is the same as a conventional mechanical scanning spectrometer using a photomultiplier detector if it were possible to scan the latter at the same high rate. The instrument is being used to investigate the time variation in spectral output of light sources, but should also be useful in other studies such as explosions, shock tubes, lightning, plasmas, missile launch and reentry, and other sources of intense transitory radiation phenomena.
光谱扫描是在电子扫描光谱仪中借助一种称为析像管的电视型摄像管来完成的。由于扫描是通过电子方式进行的，所以无需任何机械运动就能实现极快的光谱扫描。标准仪器的可选扫描速率为每秒100次或1000次光谱扫描，不过也可以实现更快或更慢的扫描速率。如果能以同样的高速对传统机械扫描光谱仪（使用光电倍增管探测器）进行扫描，那么该光谱仪的灵敏度与之相同。该仪器正用于研究光源光谱输出的时间变化，但在其他研究中也应会有用，比如爆炸、激波管、闪电、等离子体、导弹发射与重返大气层，以及其他强烈瞬态辐射现象的来源。
