Statistics – Applications
Scientific paper
Nov 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ijimw...6.1121b&link_type=abstract
International Journal of Infrared and Millimeter Waves (ISSN 0195-9271), vol. 6, Nov. 1985, p. 1121-1138.
Statistics
Applications
3
Cyclotron Resonance, Indium Antimonides, Low Temperature, Submillimeter Waves, Superheterodyne Receivers, Magnetic Induction, Noise Temperature, Operating Temperature, Systems Engineering
Scientific paper
A heterodyne receiver has been developed for observation of interstellar atomic and molecular lines in the submillimeter wavelength region. The main detection mechanism of the device is cyclotron resonance in bulk n-InSb due to a quantized magnetic field. Measurements were carried out between 492 and 812 GHz in order to determine the sensitivity of the device for astrophysical applications. Double sideband receiver noise temperatures of 250 K at 492 GHz; 350 K at 625 GHz; and 510 K at 812 GHz were obtained. The magnetic induction for the laboratory tests was about 2.5 KG and the mixer operating temperature was about 1.6 K. It is shown that the receiver is sensitive enough to identify the narrow rotation lines of diatomic hydrides in dark-cloud regions of the interstellar medium.
Brown Elizabeth R.
Keene Jocelyn
Phillips Thomas G.
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