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Author | Gershenzon, E. M.; Gol'tsman, G. N.; Mirskii, G. I. | ||||
Title | Submillimeter backward-wave-tube spectrometer-relaxometer | Type | Journal Article | ||
Year | 1987 | Publication | Pribory i Tekhnika Eksperimenta | Abbreviated Journal | Pribory i Tekhnika Eksperimenta |
Volume | 30 | Issue | 4 | Pages | 131-137 |
Keywords | BWO, applications | ||||
Abstract | A backward-wave-tube (BWT) spectrometer-relaxometer is described that is designed for study of the relaxation characteristics of photoconductors in the wavelength range of 2-0.25 mm – in particular, to measure the relaxation times of the submillimeter photoconductivity of germanium in the range of 10[sup:-4]-10[sup:-9] sec and to determine from these data the concentration of compensating impurities of from 10[sup:10] to 10[sup:14] cm[sup:-3]. The instrument uses the beats of the oscillations of two BWTs and records the amplitude-frequency response of the specimen with variation of the beat frequency from 10[sup:4] to 10[sup:8] Hz with accumulation of the desired signal for less than or equal to1 sec by means of a quadrature synchronous detector. The beat frequency is stabilized and the quadrature voltages of the synchronous detector are formed by means of phase-locked loops. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Russian | Summary Language | Original Title | ||
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Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Serial | 1699 | |||
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