| Records |
| Author |
Koshelets, V. P.; Dmitriev, P. N.; Ermakov, A. B.; Filippenko, L. V.; Sobolev, A. S.; Torgashin, M. Yu.; Borisov, V. B. |
| Title |
Superconducting flux-flow oscillators for THz integrated receiver |
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Abstract |
| Year |
2005 |
Publication |
Presented at the second Franco-Russian Seminar on Nanotechnologies |
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SIR |
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Lille, France |
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521 |
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| Author |
Vaks, V. L.; Kurin, V. V.; Pankratov, A. L.; Koshelets, V. P. |
| Title |
Investigation of spectral properties of phase-focked flux flow oscillator |
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Abstract |
| Year |
2005 |
Publication |
ISEC |
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PD-04 |
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SIR, FFO |
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Place of Publication |
Netherlands |
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no |
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522 |
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| Author |
Hoogeveen, R. W. M.; Yagoubov, P. A.; de Lange, A.; Selig, A. M.; Koshelets, V. P.; Ellison B. N.; Birk, M. |
| Title |
Superconducting integrated receiver development for TELIS |
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Conference Article |
| Year |
2005 |
Publication |
Proc. 12th International Symposium on Remote Sensing |
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SIR |
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Bruges, Belgium |
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no |
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523 |
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Тарасов, М.; Кузьмин, Л. |
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Концепция смесителя на основе болометра на холодных электронах |
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Journal Article |
| Year |
2005 |
Publication |
Письма в ЖЭТФ |
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81 |
Issue |
10 |
Pages |
661-664 |
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CEB, mixer |
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545 |
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| Author |
Tol, J. van; Brunel, L.-C.; Wylde, R. J. |
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A quasioptical transient electron spin resonance spectrometer operating at 120 and 240 GHz |
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Journal Article |
| Year |
2005 |
Publication |
Rev. Sci. Instrum. |
Abbreviated Journal |
Rev. Sci. Instrum. |
| Volume |
76 |
Issue |
7 |
Pages |
074101 (1 to 8) |
| Keywords |
Schottky, noise temperature |
| Abstract |
A new multifrequency quasioptical electron paramagnetic resonance (EPR) spectrometer is described. The superheterodyne design with Schottky diode mixer/detectors enables fast detection with subnanosecond time resolution. Optical access makes it suitable for transient EPR (TR-EPR) at 120 and 240 GHz. These high frequencies allow for an accurate determination of small g-tensor anisotropies as are encountered in excited triplet states of organic molecules like porphyrins and fullerenes. The measured concentration sensitivity for continuous-wave (cw) EPR at 240 GHz and at room temperature without cavity is 1013 spins/cm3 (15 nM) for a 1 mT linewidth and a 1 Hz bandwidth. With a Fabry-Perot cavity and a sample volume of 30 nl, the sensitivity at 240 GHz corresponds to [approximate]3×109 spins for a 1 mT linewidth. The spectrometer's performance is illustrated with applications of transient EPR of excited triplet states of organic molecules, as well as cw EPR of nitroxide reference systems and a thin film of a colossal magnetoresistance material. |
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| Notes |
Actually, noise spectral density is given (3e-19 W/Hz) |
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no |
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588 |
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