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这里密述ICECAP极光测量计划所用一种红外分光计、从高度45公里到200公里的火箭上取得大气发射光谱,这仪器连续扫描6.75—23.2微米光谱区,扫速为2次扫描/秒,仪器使用一个圆形渐变滤光器(CVF),光谱分辨率从3％到4％。全部光学组件、矽砷探测器、CVF、Irtran6透镜、挡壳、可卸的冷却罩装在一个高真空杜瓦瓶系统内冷却到10k以下,分光计在22微米处噪音等效光谱辐射(NESR)优于1×10~(-1)(W厘米~(-2)球面度~(-1)微米~(-1))。两次火箭飞行观察到高空大气发射占优势的是9.6—微米O_3和15微米CO_2。
An infrared spectrometer for the ICECAP auroral measurement program was densified here to obtain atmospheric emission spectra from a rocket height of 45 km to 200 km. The instrument continuously scanned the 6.75-23.2 μm spectral region at a sweep rate of 2 scans per second. The instrument Using a circular gradient filter (CVF), spectral resolution from 3% to 4%. All optical components, silicon arsenide detector, CVF, Irtran 6 lens, retaining shell, removable cooling hood Cooling to below 10k in a high vacuum Dewar flask system, spectrometer at 22μm Noise Equivalent Spectral Emissions (NESR ) Is better than 1 × 10 -1 (W cm -2) -1 (-1) μm). Two rocket flights observed that the upper-air emissions dominated 9.6-micron O_3 and 15-micron CO_2.