A 500-900 GHz Heterodyne Receiver for Astronomical Spectroscopy

用于天文光谱的 500-900 GHz 外差接收器

• 批准号: 8817544
• 负责人: Daniel Jaffe
• 金额: $ 14.85万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-03-15 至 1991-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8817544&HistoricalAwards=false
• 关键词: 500; 900; GHz; Heterodyne; Receiver

Dr. Jaffe and his group have designed and constructed a spectrometer receiver for the 500.900 Gigahertz frequency band. The receiver consists of a cooled, open.structure Schottky diode mixer coupled quasi.optically to the telescope and to an optically pumped laser local oscillator. This grant will be used to package the system for use on the California Institute of Technology Submillimeter Observatory telescope in Hawaii. The receiver built by Dr. Jaffe can make a valuable contribution to many astrophysical problems. These include studies of warm, ultra.dense gas in the immediate surroundings of massive protostars, observations of warm quiescent gas including studies of CII/CI/CO interfaces in clumpy molecular clouds, and investigations of hot molecular gas in protostellar flows.

Jaffe博士和他的团队设计并建造了一个 500.900千兆赫频段的光谱仪接收器。 接收器由一个冷却的、开放结构的肖特基二极管组成 混频器准光学耦合到望远镜和一个 光泵激光本机振荡器 这笔资金将用于 将该系统打包，供加州研究所使用， 技术亚毫米天文台望远镜在夏威夷。 杰斐博士制造的接收器可以做出宝贵的贡献 许多天体物理学问题。 这些研究包括对温暖， 在大质量核周围的超密度气体 原恒星，温暖的静态气体的观测，包括研究 在clustered分子云中的CII/CI/CO界面， 研究原恒星流中的热分子气体。