A primary standard source of radon-222 based on the HPGe detector / Mostafa M. Y. A.,Vasyanovich M.,Zhukovsky M. // APPLIED RADIATION AND ISOTOPES. - 2017. - V. 120, l. . - P. 101-105.

ISSN/EISSN:

0969-8043 / нет данных

Type:

Article

Abstract:

The present paper describes the prototype of a calibration standard system for radon concentrations to be used in establishing the traceability of radon concentration measurements in dwellings. Radon gas was generated with a radium-226 solid source in a certified volume as a closed system. The activity of the radon that was released in the closed system was determined from the difference between the absolute activity of the standard radium solid source and the residual radon decay products (Bi-214 or Pb-214). A high -purity germanium (HPGe) detector, which was calibrated using gamma reference standard sources, was used to measure the activity of a radium solid source and radon decay products (Bi-214 or Pb-214). The enianation factor of the Ra-226 source was controlled online with the HPGe detector. Radon activity was achieved at similar to 1500 +/- 45 Bq from the radium source at 3.95 +/- 0.2 kBq under equilibrium conditions. After this activity, the radon gas was transferred into the closed system producing radon activity concentrations of 31.1 +/- 0.3 kBq/m(3). Systematic errors were found of less than 4\% with a random error around 0.5\%. The random error is generally associated with the estimation of the count rate of the measured radon progenies (Po-214 and Po-214 for alpha measurements or Pb-214 and Bi-214 for gamma measurements), but systematic errors are associated With the errors introduced by the instrumentation and measurement technique. The system that was developed has a high degree of accuracy and can be recommended as a national or regional prototype standard of radon activity concentration to calibrate different working radon measurement devices.

Author keywords:

Radon measurement; Radon standard; Solid radium source; Emanation ABSOLUTE MEASUREMENT; RADON; CALIBRATION; CHAMBER

DOI:

10.1016/j.apradiso.2016.12.012

Web of Science ID:

ISI:000392044700017

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	FEB
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
Keywords-Plus	ABSOLUTE MEASUREMENT; RADON; CALIBRATION; CHAMBER
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
Funding-Acknowledgement	Act 211 of the Government of the Russian Federation {[}02.A03.21.0006]; Centre of Excellence: Radiation and Nuclear Technologies
Funding-Text	The work was partly supported by Act 211 of the Government of the Russian Federation (contract No 02.A03.21.0006) and the Centre of Excellence: Radiation and Nuclear Technologies.
Number-of-Cited-References	20
Usage-Count-Last-180-days	10
Usage-Count-Since-2013	10
Journal-ISO	Appl. Radiat. Isot.
Doc-Delivery-Number	EH8TH