Modeling the responses of a high-temperature superconductor bolometer for absolute measurements of synchrotron radiation

Хребтов И.А., Маляров В.Г., Иванов К.В., Хохлов Д.А., Николенко А.Д., Пиндюрин В.Ф. Моделирование характеристик высокотемпературного сверхпроводникового болометра для абсолютных измерений синхротронного излучения // Оптический журнал. 2007. Т. 74. № 7. С. 51–58.

Khrebtov I.A., Malyarov V.G., Ivanov K.V., Khokhlov D.A., Nikolenko A.D., Pindyurin V.F. Modeling the responses of a high-temperature superconductor bolometer for absolute measurements of synchrotron radiation [in Russian] // Opticheskii Zhurnal. 2007. V. 74. № 7. P. 51–58. 

I. A. Khrebtov, V. G. Malyarov, K. V. Ivanov, D. A. Khokhlov, A. D. Nikolenko, and V. F. Pindyurin, "Modeling the responses of a high-temperature superconductor bolometer for absolute measurements of synchrotron radiation," Journal of Optical Technology. 74 (7), 479-484 (2007). https://doi.org/10.1364/JOT.74.000479

Calculational modeling has been carried out of the responses of a compound bolometer with electrical substitution, based on high-temperature superconducting film. The operating principle of the bolometer as the main element of an absolute radiometer for absolute measurements of synchrotron radiation of the soft x-ray range 150-3000 eV is discussed. An estimate is made of how various noise components affect the threshold sensitivity of bolometers that operate with positive and negative electrothermal feedback with variation of the time constant, resistance, type of substrate material, and size of the detector area. In the optimum version, it is possible to reach a noise equivalent power of NEP ≈4 × 10^-11 W/Hz^1/2 at a modulation frequency of 10 Hz and a radiometer accuracy no worse than 1% when measuring a synchrotron radiation power of about 1 μW.