National primary standard of air kerma, air kerma rate, exposure, exposure rate and energy flux for X-rays and gamma radiation GET 8-2019-Reference-Cited by-同舟云学术

National primary standard of air kerma, air kerma rate, exposure, exposure rate and energy flux for X-rays and gamma radiation GET 8-2019

Published:2020 Issue:8 Volume: Page:8-12
ISSN:0368-1025
Container-title:Izmeritel`naya Tekhnika
language:
Short-container-title:Izmer. Tekhn.

Author:

Oborin Alexandr V.¹,Villevalde Anna Y.¹,Trofimchuk Sergey G.¹

Affiliation:

1. D. I. Mendeleyev Institute for Metrology (VNIIM)

Abstract

The results of development of the national primary standard of air kerma, air kerma rate, exposure, exposure rate and energy flux for X-rays and gamma radiation GET 8-2011 in 2019 are presented according to the recommendations of the ICRU Report No. 90 “Key Data for Ionizing-Radiation Dosimetry: Measurement Standards and Applications”. The following changes are made to the equations for the units determination with the standard: in the field of X-rays, new correction coefficients of the free-air ionization chambers are introduced and the relative standard uncertainty of the average energy to create an ion pair in air is changed; in the field of gamma radiation, the product of the average energy to create an ion pair in air and the electron stopping-power graphite to air ratio for the cavity ionization chambers is changed. More accurate values of the units reproduced by GET 8-2019 are obtained and new metrological characteristics of the standard are stated.

Publisher

FSUE VNIIMS All-Russian Research Institute of Metrological Service

Subject

General Medicine

Reference8 articles.

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