| Records |
| Author |
Matveenko, L. I.; Moiseev, I. G.; Severnyi, A. B.; Sorochenko, R. L. |
| Title |
Prospects for the development of ultralong-baseline radiointerferometry |
Type |
Journal Article |
| Year |
1982 |
Publication |
Sov. Phys. Uspekhi |
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| Volume |
25 |
Issue  |
2 |
Pages |
118-119 |
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MSPU @ s @ wlbi_interf_Kardashev |
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224 |
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Гершензон, Е. М.; Гершензон, М. Е.; Гольцман, Г. Н.; Люлькин, А. М.; Семенов, А. Д.; Сергеев, А. В. |
| Title |
О предельных характеристиках быстродействующих серхпроводниковых болометров |
Type |
Journal Article |
| Year |
1989 |
Publication |
Журнал технической физики |
Abbreviated Journal |
Журнал технической физики |
| Volume |
59 |
Issue |
2 |
Pages |
111-120 |
| Keywords |
HEB |
| 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 кконструкции «электронного болометра» для достижения предельной чувствительности. Проведено сравнение характеристик электронного болометра и обычных болометров различных типов. |
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Russian |
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Duplicated as 237 |
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238 |
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| Author |
Gershenzon, E. M.; Gershenzon, M. E.; Goltsman, G. N.; Semenov, A. D.; Sergeev, A. V. |
| Title |
Wide-band highspeed Nb and YBaCuO detectors |
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Journal Article |
| Year |
1991 |
Publication |
IEEE Trans. Magn. |
Abbreviated Journal |
IEEE Trans. Magn. |
| Volume |
27 |
Issue |
2 |
Pages |
2836-2839 |
| Keywords |
YBCO, HTS, Nb detectors |
| 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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Belitsky, V. Y.; Tarasov, M. A. |
| Title |
SIS junction reactance complete compensation |
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Journal Article |
| Year |
1991 |
Publication |
IEEE Trans. Magn. |
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27 |
Issue |
2 |
Pages |
2638-2641 |
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243 |
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Gol'tsman, G. N.; Karasik, B. S.; Okunev, O. V.; Dzardanov, A. L.; Gershenzon, E. M.; Ekstrom, H.; Jacobsson, S.; Kollberg, E. |
| Title |
NbN hot electron superconducting mixers for 100 GHz operation |
Type |
Journal Article |
| Year |
1995 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
| Volume |
5 |
Issue |
2 |
Pages |
3065-3068 |
| Keywords |
NbN HEB mixers |
| Abstract |
NbN is a promising superconducting material for hot-electron superconducting mixers with an IF bandwidth larger than 1 GHz. In the 1OO GHz frequency range, the following parameters were obtained for 50 /spl Aring/ thick NbN films at 4.2 K: receiver noise temperature (DSB) /spl sim/1000 K; conversion loss /spl sim/10 dB; IF bandwidth /spl sim/1 GHz; and local oscillator power /spl sim/1 /spl mu/W. An increase of the critical current of the NbN film, increased working temperature, and a better mixer matching may allow a broader IF bandwidth up to 2 GHz, reduced conversion losses down to 3-5 dB and a receiver noise temperature (DSB) down to 200-300 K. |
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1051-8223 |
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| Notes |
About LO power required |
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no |
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255 |
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