Investigation of a nonequilibrium electron subsystem in low-temperature microwave detectors

2004/11/01 by I. A. Devyatov, M. Yu. Kupriyanov · 1 citation
Physics and Astronomy · #Atomic physics #Condensed matter physics #Detector #Electron #Electron temperature #Gyrotron and Vacuum Electronics Research #Kinetic energy #Materials science #Microwave #Non-equilibrium thermodynamics #Nuclear physics #Optics #Physics #Physics of Superconductivity and Magnetism #Relaxation (psychology) #Superconducting and THz Device Technology #Superconductivity

paper · doi:10.1134/1.1857272

openalex publication_date 2004/11/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/21

Abstract

The electron energy distributions arising in small-size metal absorbers of microwave radiation detectors operating at ultralow temperatures have been calculated using the kinetic equation. It is shown that the electron distributions are nonequilibrium, significantly different from the Fermi distribution, and are determined by the ratio of the rates of electron-electron and electron-phonon relaxation and by the effect of the measuring element (superconductor-insulator-normal metal junction) on the absorber. The response of such a bolometer is calculated and compared to the experimental data.

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