@Article{Gershenzon_etal1987,
author="Gershenzon, E. M.
and Gol{\textquoteright}tsman, G. N.
and Mirskii, G. I.",
title="Submillimeter backward-wave-tube spectrometer-relaxometer",
journal="Pribory i Tekhnika Eksperimenta",
year="1987",
volume="30",
number="4",
pages="131--137",
optkeywords="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.",
optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=1699), last updated on Fri, 28 May 2021 21:29:52 -0500",
opturl="https://www.osti.gov/biblio/6473035",
language="Russian"
}