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[A-1.1.2 Development of Millimeter-Wave instruments of CIO and Ozone]

[Contact Person]

Hideo Ogawa
Associate Professor
Departrnent of Astrophysics
Nagoya University
Chikusa-ku, Nagoya, 464-01 Japan
Tel:+81-52-789-2840 Fax:+81-789-2845
E-mail: ogawa@a.phys.nagoya-u.ac.jp

[Total Budget for FY1994-FY1996]

74,727,000Yen

[Abstract]

　We are developing low-noise superconducting receivers of the 200 GHz band in oder to observe rare constituents of the earth's atmosphere, particularly CIO. This development includes 200 GHz mixer mounts, Superconductor-insulator-superconductor(SIS) junctions, backshort tuners, Gunn oscillators at 70-80 GHz as LO, and frequency triplers. The measurements in the laboratory indicate the best noise temperature of 60K in DSB in a frequency range of 210 to 230 GHz, an encouraging result for realization of a CIO monitoring system.

[Key Words]

CIO, Ozone, Millimeter receiver, Superconductivity