OSU Navigation Bar

The Ohio State University University Libraries Knowledge Bank

The Knowledge Bank is scheduled for regular maintenance on Sunday, April 20th, 8:00 am to 12:00 pm EDT. During this time users will not be able to register, login, or submit content.

PRESENT MILLIMETER WAVE RESEARCH AT NEW YORK UNIVERSITY

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/14307

Show full item record

Files Size Format View
1952-E-07.jpg 104.1Kb JPEG image Thumbnail of PRESENT MILLIMETER WAVE RESEARCH AT NEW YORK UNIVERSITY

Title: PRESENT MILLIMETER WAVE RESEARCH AT NEW YORK UNIVERSITY
Creators: Rohrbaugh, J. H.
Issue Date: 1952
Abstract: The third and higher harmonics of the 3031 magnetron ($\lambda = 1.25 cm$) are being used as the radiation source for dielectric constant measurements. The harmonic power is a function of both the magnetic field strength and of the keying voltage, the optimum combinations of these parameters being somewhat different for each harmonic and each magnetron. A 15-inch spectrometer employing an echelette grating in a $Greig-Ferguson^{1}$ mount is used. The detector is a Wollaston wire bolometer in guide followed by a lock-in amplifier and Esterline-Angus recorder. The signal-to-noise ratio is greater than 1000 at third harmonic and falls to approximately 50 at seventh harmonic. Index of refraction is computed from measurements of the complex amplitude transmission coefficient, the computation being done by an interation procedure.
URI: http://hdl.handle.net/1811/14307
Other Identifiers: 1952-E-7
Bookmark and Share