Method and apparatus for energy calibration of a set of electronic detection of beta radiation and / or X-ray and gamma photons with compton distribution emitted by a radioactive aerosol.

摘要

P Method for the energy calibration of a set of electronic detection of beta radiation and / or X and gamma photons with Compton distribution, emitted by a radioactive aerosol, comprising two identical chains, one of which records the spectrum (beta + photons) and the other the photon spectrum, which is distinguished from the indications, characterized in that this calibration is carried out using alpha sources as follows: BR/ - the two channels are provided alpha, beta, identical photons detectors in the form of sufficiently thin semicters to be sensitive only to the "Compton distribution" part of the photonic spectrum; BR/ - each of the semictors is subjected to an alpha standard source of known energy, identical for each source, and the spectrum of the alpha particles of the corresponding source is recorded on each channel; BR/ - the energy calibration threshold of each of the channels is matched with the near-vertical descent edge of the alpha spectrum of the standard sources in order to adjust the two chains in the same energy way. / P