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Gershenzon, E. M.; Gershenzon, M. E.; Goltsman, G. N.; Semenov, A. D.; Sergeev, A. V. |
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Title |
Wide-band highspeed Nb and YBaCuO detectors |
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1991 |
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IEEE Trans. Magn. |
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IEEE Trans. Magn. |
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27 |
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2 |
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2836-2839 |
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Keywords |
YBCO, HTS, Nb detectors |
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Abstract |
The physical limitations on the response time and the nature of nonequilibrium detection of radiation were investigated for Nb and YBCO film in a wide spectral range from millimeter to near-infrared wavelengths. In the case of ideal heat removal from the film, the detection mechanism is connected with an electron heating effect which is not selective over a wide spectral interval. For Nb, the dependence of the response time on the electron mean free path l and temperature T is tau varies as T/sup -2/l/sup -1/. The values of detectivity D* and tau are 3*10/sup 11/ W/sup -1/ Hz/sup 1/2/ cm and 5*10/sup -9/ s at T=1.6 K, respectively. For YBCO film the tau value of 1-2 ps at T=77 K was obtained; the NEP value of 3*10/sup -11/ W-Hz/sup -1/2/ can be obtained at T=77 K in the case of the optimal film matching to the radiation. |
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0018-9464 |
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239 |
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Gershenzon, E. M.; Goltsman, G. N.; Semenov, A. D.; Sergeev, A. V. |
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Title |
Limiting characteristic of fast superconducting bolometers |
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Year |
1989 |
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Sov. Phys.-Tech. Phys. |
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Sov. Phys.-Tech. Phys. |
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34 |
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195-199 |
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HEB |
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Теоретически и экспериментально исследовано физическое ограничение быстродействия сверхпроводящего болометра. Показано, что минимальная постоянная времени реализуется в условиях электронного разогрева и определяется процессом неупругого электрон-фонон- ного взаимодействия. Сформулированы требования кконструкции «электронного болометра» для достижения предельной чувствительности. Проведено сравнение характеристик электронного болометра и обычных болометров различных типов. |
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О предельных характеристиках быстродействующих серхпроводниковых болометров |
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237 |
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Gershenzon, E. M.; Gershenson, M. E.; Goltsman, G. N.; Lyulkin, A. M.; Semenov, A. D.; Sergeev, A. V. |
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Title |
Limiting characteristics of fast-response superconducting bolometers |
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Journal Article |
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1989 |
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Zhurnal Tekhnicheskoi Fiziki |
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Zhurnal Tekhnicheskoi Fiziki |
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59 |
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2 |
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11-120 |
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HEB |
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Abstract |
Теоретически и экспериментально исследовано физическое ограничение быстродействия сверхпроводящего болометра. Показано, что минимальная постоянная времени реализуется в условиях электронного разогрева и определяется процессом неупругого электрон-фонон-ного взаимодействия. Сформулированы требования к конструкции «электронного болометра» для достижения предельной чувствительности. Проведено сравнение характеристик электронного болометра и обычных болометров различных типов. |
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1696 |
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Gershenzon, E. M.; Gershenzon, M. E.; Gol'tsman, G. N.; Karasik, B. S.; Semenov, A. D.; Sergeev, A. V. |
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Title |
Light-induced heating of electrons and the time of the inelastic electron-phonon scattering in the YBaCuO compound |
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1987 |
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JETP Lett. |
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JETP Lett. |
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46 |
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6 |
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285-287 |
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Keywords |
YBCO HTS HEB |
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For the first time, measurements have been made on the electron energy relaxation time due to the electron--phonon interaction in films of the YBaCuO superconductor. The results indicate a significant intensification of the electron--phonon interaction in this compound as compared with normal superconducting metals. |
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1706 |
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Gershenzon, E. M.; Gershenzon, M. E.; Gol'tsman, G. N.; Semenov, A. D.; Sergeev, A. V. |
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Title |
Heating of electrons in a superconductor in the resistive state by electromagnetic radiation |
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Year |
1984 |
Publication |
Sov. Phys. JETP |
Abbreviated Journal |
Sov. Phys. JETP |
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Volume |
59 |
Issue |
2 |
Pages |
442-450 |
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Keywords |
Nb HEB |
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Abstract |
The effect of heating of electrons relative to phonons is observed and investigated in a superconducting film that is made resistive by current and by an external magnetic field. The effect is manifested by an increase of the film resistance under the influence of the electromagnetic radiation, and is not selective in the frequency band 10^10-10^15 Hz. The independence of the effect of frequency under conditions of strong scattering by static defects is attributed to the decisive role of electron-electron collisions in the distribution function. The experimentally obtained characteristic time of resistance variation near the superconducting transition corresponds to the relaxation time of the order parameter, while at lower temperatures and fields it corresponds to the time of the inelastic electron-phonon interaction. |
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RPLAB @ phisix @ |
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983 |
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