{"title":"用激光外差辐射法探测大气气体的热辐射","authors":"D. Courtois, D. Delahaigue, C. Thiebeaux","doi":"10.1016/0020-0891(93)90072-F","DOIUrl":null,"url":null,"abstract":"<div><p>A gaseous component is considered as a self emitting source that can be detected and characterized remotely by its thermal emission spectrum. The required spectrum analyser should have an appropriately narrow bandwidth. For an atmospheric component, with isolated absorption lines, the linewidths are about 0.1 cm<sup>−1</sup> or 3 GHz under standard conditions. This leads to the need for a high resolution radiometer. A laser heterodyne radiometer (LHR) has been used to detect the emission of two components (C<sub>2</sub>H<sub>4</sub> and NH<sub>3</sub>) at 10 μm wavelength under atmospheric pressure.</p></div>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 4","pages":"Pages 407-413"},"PeriodicalIF":0.0000,"publicationDate":"1993-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90072-F","citationCount":"2","resultStr":"{\"title\":\"Detection of thermal emission from atmospheric gases by laser heterodyne radiometry\",\"authors\":\"D. Courtois, D. Delahaigue, C. Thiebeaux\",\"doi\":\"10.1016/0020-0891(93)90072-F\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A gaseous component is considered as a self emitting source that can be detected and characterized remotely by its thermal emission spectrum. The required spectrum analyser should have an appropriately narrow bandwidth. For an atmospheric component, with isolated absorption lines, the linewidths are about 0.1 cm<sup>−1</sup> or 3 GHz under standard conditions. This leads to the need for a high resolution radiometer. A laser heterodyne radiometer (LHR) has been used to detect the emission of two components (C<sub>2</sub>H<sub>4</sub> and NH<sub>3</sub>) at 10 μm wavelength under atmospheric pressure.</p></div>\",\"PeriodicalId\":81524,\"journal\":{\"name\":\"Infrared physics\",\"volume\":\"34 4\",\"pages\":\"Pages 407-413\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1993-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0020-0891(93)90072-F\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Infrared physics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/002008919390072F\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Infrared physics","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/002008919390072F","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Detection of thermal emission from atmospheric gases by laser heterodyne radiometry
A gaseous component is considered as a self emitting source that can be detected and characterized remotely by its thermal emission spectrum. The required spectrum analyser should have an appropriately narrow bandwidth. For an atmospheric component, with isolated absorption lines, the linewidths are about 0.1 cm−1 or 3 GHz under standard conditions. This leads to the need for a high resolution radiometer. A laser heterodyne radiometer (LHR) has been used to detect the emission of two components (C2H4 and NH3) at 10 μm wavelength under atmospheric pressure.
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