Laboratory Study of Reactive Molecules of Interest to Radio and Submillimeter-Wave Astronomy: A Program of Research andInstrumental Development

射电和亚毫米波天文学感兴趣的反应分子的实验室研究：研究和仪器开发计划

• 批准号: 9024902
• 负责人: Patrick Thaddeus
• 金额: $ 31.5万
• 依托单位: Harvard University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-04-15 至 1995-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9024902&HistoricalAwards=false
• 关键词: Laboratory; Study; Reactive; Molecules; Interest

Drs. Patrick Thaddeus and Carl Gottlieb will continue a program of laboratory astrophysical research on reactive molecules that are constituents of interstellar gas and circumstellar shells. They will carry out spectroscopy of carbenes, carbon-chain and other new radicals, silicon molecules, metal carbides, and of the vibrationally excited states and isotopically substituted species of known reactive molecules. The investigation will be made with an improved nonresonant double-pass millimeter-wave spectrometer. The whole subject of reactive molecules of astrophysical interest is in a period of explosive growth. Building on recent detections of SiC, SiCC, highly vibrationally excited SiO, and the cumulene carbenes H2CCC and H2CCCC, the investigation will emphasize surveys of discharges about 50 GHz wide in frequency. From initial surveys made in this laboratory, many new reactive species are expected. There are also plans to extend the range of the spectrometer farther into the far infrared and to construct a nonresonant multipass spectrometer which may result in a significant increase in sensitivity.

帕特里克撒迪厄斯和卡尔戈特利布博士将继续一个计划， 实验室天体物理学研究的反应分子， 星际气体和星周壳的成分。 他们 将进行卡宾，碳链和其他新的光谱 自由基，硅分子，金属碳化物，以及 振动激发态和同位素取代物种 已知的活性分子。 调查将与 一种改进的非共振双程毫米波谱仪。 整个天体物理学中的活性分子 处于爆炸性增长时期。 根据最近的侦查结果 SiC、SiCC、高振动激发的SiO和累积多烯 卡宾H2CCC和H2CCCC，调查将侧重于调查 50千兆赫宽的放电频率 从初步调查 在这个实验室里，许多新的活性物种有望出现。 也有计划扩大光谱仪的范围 更远的远红外线，并建立一个非共振 多程光谱仪，这可能会导致显着增加 在敏感性。