A 500-900 GHz Heterodyne Receiver for Astronomical Spectroscopy

贾菲博士和他的团队设计并建造了一台适用于500.900吉赫频段的光谱仪接收器。该接收器由一个冷却的开放式肖特基二极管混频器组成，准光耦合到望远镜和光泵浦的激光本机振荡器。这笔赠款将用于包装该系统，以便在夏威夷的加州理工学院亚毫米天文台望远镜上使用。杰菲博士建造的接收器可以为解决许多天体物理问题做出宝贵的贡献。这些包括对大质量原恒星周围温暖、超稠密气体的研究，对温暖静止气体的观测，包括对块状分子云中CII/CI/CO界面的研究，以及对原恒星流动中热分子气体的研究。

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.