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Noise tube sources for the far IR and millimeter regionThe radiant output of a noise tube designed for the 90-140-GHz (3.3-2.1-mm) frequency range has been compared with that from mercury lamps over the wavelength region from 0.4 to about 6 mm. Lamellar grating and Michelson Fourier transform spectrometers were used in conjunction with He cooled bolometers of NEP from 10 to the -12th to 10 to the -14th W/sq rt H2 to measure relative spectral irradiance. With this instrumental arrangement, the radiant power emitted by the noise tube was observed to be less than that from a mercury lamp, at least to a 3-mm wavelength, but it produced less source noise than an ac operated mercury lamp. When the noise tube operating current was reduced, the spectral irradiance peak shifted to longer wavelengths.
Document ID
19880053218
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Moller, K. D.
(Fairleigh Dickinson Univ. Teaneck, NJ, United States)
Zoeller, R. G.
(Fairleigh Dickinson Univ. Teaneck, NJ, United States)
Ugras, N. G.
(Fairleigh Dickinson Univ. Teaneck, NJ, United States)
Zablocky, P.
(Fairleigh Dickinson University Teaneck, NJ, United States)
Heaney, James B.
(Fairleigh Dickinson Univ. Teaneck, NJ, United States)
Stewart, K. P.
(Fairleigh Dickinson Univ. Teaneck, NJ, United States)
Boucarut, R. A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 13, 2013
Publication Date
May 15, 1988
Publication Information
Publication: Applied Optics
Volume: 27
ISSN: 0003-6935
Subject Category
Instrumentation And Photography
Accession Number
88A40445
Funding Number(s)
CONTRACT_GRANT: DAAK11-82-K-0013
Distribution Limits
Public
Copyright
Other

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