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Author  |
Astakhov, V I; Vanin, N V; Galaktionov, V V; Dorokhov, V M; Zakharov, V M; Khattatov, V U |
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Title |
Use of laser heterodyne spectrometry in determining monochromatic atmospheric transmission |
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Year |
1979 |
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Sov. J. Quantum Electron. |
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Volume |
9 |
Issue |
10 |
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1245-1250 |
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Keywords |
IR applications |
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0049-1748 |
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489 |
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Author |
Gershenzon, E. M.; Gol'tsman, G. N.; Multanovskii, V. V.; Ptitsyna, N. G. |
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Title |
Capture of photoexcited carriers by shallow impurity centers in germanium |
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Journal Article |
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Year |
1979 |
Publication |
Sov. Phys. JETP |
Abbreviated Journal |
Sov. Phys. JETP |
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Volume |
50 |
Issue |
4 |
Pages |
728-734 |
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Keywords |
Ge, photoexcited carriers, shallow impurity centers |
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Measurements were made of the lifetimes rf of free carriers and the relaxation time 7, of the submillimeter impurity photoconductivity when carriers are captured by attracting shallow donors and acceptom in Ge. It is nod that in samples with capture-center concentration N,Z 10"cm-' the relaxation time 7, greatly exceeds rf in the temperature range 4.2-12 K. The measured values of 7,- are compared with the calculation of cascade recombination by the classical model. To evaluate the data on T,, the distinguishing features of this model are considered for the nonstationary case. The substantial difference betweea the values of rf and T, is attributed to re-emission of the carriers from the excited states of the shallow impurities. |
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1720 |
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Author |
Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsina, N. G. |
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Title |
Population and lifetime of excited states of shallow impurities in Ge |
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Journal Article |
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Year |
1979 |
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Sov. Phys. JETP |
Abbreviated Journal |
Sov. Phys. JETP |
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Volume |
49 |
Issue |
2 |
Pages |
355-362 |
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Keywords |
Ge, photothermal ionization, shallow impurities |
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An investigation was made of the dependences of the intensities of photothermal ionization lines of excited states of shallow impurities in Ge on the intensity of impurity-absorbed background radiation and on temperature. The results obtained were used to find the density and lifetime of carriers of lower excited states of the impurity centers. The lifetimes of the excited states of donors in Ge were 10-~-10-" sec and the lifetime of the lower excited state of acceptors was -lo-' sec. In the presence of background radiation the population of the excited states was very different from the equilibrium value and, in particular, a population inversion of the 2pk, state relative to the 3p0 and 3s states was observed. |
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1719 |
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Gershenzon, E. M.; Il'in, V. A.; Litvak-Gorskaya, L. B.; Filonovich, S. R. |
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Title |
Character of submillimeter photoconductivity in n-lnSb |
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Journal Article |
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Year |
1979 |
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Sov. Phys. JETP |
Abbreviated Journal |
Sov. Phys. JETP |
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Volume |
49 |
Issue |
1 |
Pages |
121-128 |
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A comprehensive investigation was made of the submillimeter photoconductivity of n -1nSb in the range of wavelengths L = 0.6-8 mm, magnetic fields H = 0-30 kOe, electric fields E = 0.01-0.5 V/cm, and temperatures T = 1.3-30 K. The kinetics of the photoconductivity processes as a function of T, E; and H is investigated. It is shown that impurity photoconductivity does exist for any degree of compensation of extremely purified n-InSb. Particular attention is paid to the hopping photoconductivity realized in strongly compensated n-1nSb (K > 0.8). |
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RPLAB @ phisix @ |
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985 |
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Author |
Richards, P. L.; Shen, T. M.; Harris, R. E.; Lloyd, F. L. |
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Title |
Quasiparticle heterodyne mixing in SIS tunnel junctions |
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Year |
1979 |
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Appl. Phys. Lett. |
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34 |
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5 |
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345-347 |
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MSPU @ s @ SIS_mixing_qua_part_Richards_1979 |
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222 |
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