Abstract

The chapter discusses some methods of absolute measurements of spectral radiation intensity of investigated photoprocesses, providing the photoprocess spectra have been well known in arbitrary units. The methods of absolute measurements are also considered in the events, where the radiation indicator function is a well-known, and the task of the radiation fraction falling on the photocathode has the exact solution as with a point light source, uniform illuminating sphere, and infinite illuminating plane. Several techniques of absolute calibration are discussed with respect to registration systems through such photoprocesses as the Rayleigh scattering and photoluminescence, provided that the calibrated photoprocesses as well as the photoprocesses under study illuminate as a uniform illuminating cylinder. Finally, the methods of absolute calibration are treated with respect to spectrometer/photodetector systems in the events, where any absolute calibration methods cannot be applied to the photodetector.

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