Prototype of a primary calibration system for measurement of radon activity concentration / Mostafa M. Y. A.,Vasyanovich M.,Zhukovsky M. // APPLIED RADIATION AND ISOTOPES. - 2016. - V. 107, l. . - P. 109-112.

ISSN/EISSN:

0969-8043 / нет данных

Type:

Article

Abstract:

To calibrate measurement devices for monitoring the activity concentration of Rn-222 in air, a prototype of a calibration facility is tested using a solid Ra-226 source and a high-purity germanium (HPGe) detector. An emanation box was mounted on the detector for online gamma measurements. Inside this box, a 32.8 kBq +/- 3\% Ra-226 standard source was placed. An AlphaGUARD control radon monitor was connected to the emanation box with a pumping air system in an open flow mode as a reference monitor. The emanation coefficient of the source was controlled online by comparing the gamma activity of Bi-214 (Ey=609.3 key), progeny of Ra-226, to that of the calibration source. A standard Cs-137 source, installed within the emanation box, was used as a reference for gamma spectroscopy using the HPGe detector, with a total systematic error of 4\% and a random error less than 2\%. The ratio between gamma measurements and AlphaGUARD was 0.94 +/- 0.4; which is within the 9\% uncertainties of AlphaGUARD calibration. (C) 2015 Elsevier Ltd. All rights reserved.

Author keywords:

Radon; Radon decay products; Emanation factor; Radon standard source ABSOLUTE MEASUREMENT; RN-222; STANDARDS; CHAMBER; DETECTORS; THORON

DOI:

10.1016/j.apradiso.2015.10.014

Web of Science ID:

ISI:000367410300018

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JAN
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
Keywords-Plus	ABSOLUTE MEASUREMENT; RN-222; STANDARDS; CHAMBER; DETECTORS; THORON
Research-Areas	Chemistry; Nuclear Science \& Technology; Radiology, Nuclear Medicine \& Medical Imaging
Web-of-Science-Categories	Chemistry, Inorganic \& Nuclear; Nuclear Science \& Technology; Radiology, Nuclear Medicine \& Medical Imaging
Author-Email	Mostafa\_85@mail.ru
ResearcherID-Numbers	Mostafa, Mostafa/N-2285-2016
ORCID-Numbers	Mostafa, Mostafa/0000-0002-5445-0248
Number-of-Cited-References	22
Usage-Count-Last-180-days	4
Usage-Count-Since-2013	8
Journal-ISO	Appl. Radiat. Isot.
Doc-Delivery-Number	CZ9IC