Metrological support for the ASKRO spectrometric channel

Autor:	S. A. Korolev, O. V. Rumyantsev, Yu. E. Lavrukhin
Rok vydání:	2010
Předmět:	Materials science Nuclear Energy and Engineering Spectrometer Point source Approximation error Numerical analysis Monte Carlo method Sensitivity (control systems) Radiation Nuclear Experiment Metrology Computational physics
Zdroj:	Atomic Energy. 109:34-39
ISSN:	1573-8205 1063-4258
DOI:	10.1007/s10512-010-9320-1
Popis:	The metrological support for monitoring of ground layer of the atmosphere with ASKRO gamma spectrometers requires determining their sensitivity in the measurement geometry of technogenic radionuclides. The application of numerical modeling, the method of similarity of radiation fields, and a combined method in evaluating sensitivity of a spectrometer is examined. It is shown that the model method overstates the sensitivity and does not permit checking the spectrometer. To decrease the error of estimation a combination of measurements of the efficiency of the spectrometer for a point source and a Monte Carlo calculation of the incident flux is used. An estimate of the total relative error of determination of the sensitivity is given and it is shown that it can be verified. The estimates obtained for the sensitivity increase the minimum measured volume activity of the spectrometer at energies less than 1 MeV.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::42cf19d0d618002f73def05f2f6c7c4d https://doi.org/10.1007/s10512-010-9320-1 Zobrazit plný text záznamu Full text from SpringerLink