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| Author |
Archer, J. W. |
Title  |
Multiple mixer, cryogenic receiver for 200-350 GHz |
Type |
Journal Article |
| Year |
1983 |
Publication |
Rev. Sci. Instrum. |
Abbreviated Journal |
Rev. Sci. Instrum. |
| Volume |
54 |
Issue |
10 |
Pages |
1371-1376 |
| Keywords |
Schottky, mixer, noise temperature |
| Abstract |
This paper describes a new 200–350-GHz dual polarization heterodyne radiometer receiver for radio astronomy applications. The receiver incorporates four pairs of cryogenically cooled Schottky-barrier diode single-ended mixers, each pair covering a 30–40-GHz subband of the full operating band. Each mixer, with its IF amplifier, is mounted in an individual cryogenic subdewar comprising a separate vcuum chamber and a cold stage, which may be readily thermally connected to or disconnected from the main refrigerator by a novel mechanical heat switch. A dual polarization LO diplexer is mounted on a rotary table above the subdewars. For band selection, the two diplexer rf output ports may be positioned over any of the four pairs of subdewars. The SSB receiver noise temperatues achieved are less than 500 K between 200 and 240 GHz, less than 800 K between 245 and 275 GHz and 1500 K at 345 GHz. |
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589 |
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| Author |
Perrin, N.; Vanneste, C. |
| Title |
Response of superconducting films to a periodic optical irradiation |
Type |
Journal Article |
| Year |
1983 |
Publication |
Phys. Rev. B |
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| Volume |
28 |
Issue |
9 |
Pages |
5150-5159 |
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sc_resp_Perrin_1983 |
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233 |
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| Author |
Gershenzon, E. M.; Gol'tsman, G. N.; Semenov, A. D. |
| Title |
Submillimeter backward wave tube spectrometer for measuring superconducting film transmission |
Type |
Journal Article |
| Year |
1983 |
Publication |
Pribory i Tekhnika Eksperimenta |
Abbreviated Journal |
Pribory i Tekhnika Eksperimenta |
| Volume |
26 |
Issue |
5 |
Pages |
134-137 |
| Keywords |
BWO spectroscopy, spectrometer, transmission |
| Abstract |
A spectrometer employing six backward wave tubes is described. It is intended for investigation of superconductors in the 0.2-3 mm range of wave lengths. During the measurement of the transmission spectrum it is possible to determine the energy gap for superconduct1ng films 50 to 4000 A thick. The transmission factor can vary from 10-1 to 10-9. Spectrum of relation of film transmission factors in superconducting and normal states is measured for determining the energy gap 2 Δ. The transmission spectrum obtained by means of a computer for vanadium film 300 A thick is given as an example. The energy gap 2 Δ = 1.4 MeV |
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Russian |
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0032-8162 |
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Субмиллиметровый спектрометр с лампами обратной волны для измерения пропускания сверхпроводниковых пленок |
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no |
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Serial |
1713 |
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| Author |
Gershenson, E. M.; Gol'tsman, G. N.; Elant'ev, A. I.; Kagane, M. L.; Multanovskii, V. V.; Ptitsina, N. G. |
| Title |
Use of submillimeter backward-wave tube spectroscopy in determination of the chemical nature and concentration of residual impurities in pure semiconductors |
Type |
Journal Article |
| Year |
1983 |
Publication |
Sov. Phys. Semicond. |
Abbreviated Journal |
Sov. Phys. Semicond. |
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17 |
Issue |
8 |
Pages |
908-913 |
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BWO spectroscopy, pure semiconductors, residual impurities |
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Применение субмиллиметровой ЛОВ спектроскопии для определения химической природы и концентрации примесей в чистых полупроводниках |
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Serial |
1714 |
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ГОСТ 19.401-78. ЕСПД. Текст программы. Требования к содержанию и оформлению |
Type |
Book Whole |
| Year |
1983 |
Publication |
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Issue |
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Pages |
1 |
| Keywords |
gost, detproj |
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no |
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RPLAB @ s @ |
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891 |
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