Measurement of radon and radon progenies at the German radon reference chamber

Paul, A.; Honig, A.; Röttger, Stefan; Keyser, U.

doi:10.1016/s0969-8043(99)00180-3

Cited by 27 publications

(4 citation statements)

References 7 publications

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“…Various types of 222 Rn detectors have been successfully adopted as 222 Rn reference measurement systems to meet general requirements such as long-term stability, good response reproducibility and the ability to carry out direct measurements of 222 Rn gas sources. The main types are pulse ionization chambers [6,12], large volume multiwire ionization chambers [14] and electrostatic cells [11,13].…”

Section: Traditional Methodsmentioning

confidence: 99%

Primary standards of radon

Felice

2007

Metrologia

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This paper describes the present status of radon (222Rn) reference standards developed by national metrology institutes. The main contributions to this field are reviewed with emphasis both on the traditional methods (based on 226Ra standards) and also on the new absolute methods that have become available since 1996, especially those more recently developed. The topics covered include a description of the various methodologies adopted, instrumentation used, uncertainties achieved and the internal and international comparisons performed to demonstrate the validity of the developed standards.

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Section: Traditional Methodsmentioning

confidence: 99%

Primary standards of radon

Felice

2007

Metrologia

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“…The equation of radioactive decay is adapted to the response value of the MWIIC for t4t c þ24 h and analysed according to the published procedures of PTB (Paul et al, 2000). The response values of the MWIIC after the injection of the radon activity result of the calibration conversion κ r :…”

Section: Calibration Of the Mwiicmentioning

confidence: 99%

Development of a transfer standard for the measurement of low Rn-222 activity concentration in air

Linzmaier

Röttger

2014

Applied Radiation and Isotopes

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“…For short-lived 222 Rn-progenies systematic investigations [2,10] of the capability of the reference samples in a well-defined air flow showed high and reproducible collection efficiencies according to the state of attachment of the radioactive ion. Of the so-called 'unattached fraction' (progenies which are not attached to aerosols) 95.2(10) % can be collected on the stainless steel screen, while of the 'attached fraction' (progenies which are attached to aerosols) only 1.5(5) % is collected .…”

Section: Experimental Set-up For the Activity Concentration Of Radon mentioning

confidence: 99%

Traceable measurements of the activity concentration in air

et al. 2002

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The nuclear reactions induced by high energetic protons in heavy targets such as UC 2 and ThC cause a particular, complex radiation protection task at facilities like ISOLDE: the measurement of a mixture of different isotopes of the radioactive noble gas radon and the radon progenies in air. The knowledge of their respective activity concentration is fundamental for exposure assessments.Due to the complex mixture of activity concentrations in air, its precise determination is quite difficult. Therefore, a new procedure for taking reference samples was developed and implemented for the traceable measurement of the activity concentration of radioactive ions (e.g. radon progenies) in air. This technique is combined by measuring α-particles with a multi-wire ionization chamber for the parallel on-line determination of the activity concentration of different radon isotopes.

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Measurement of radon and radon progenies at the German radon reference chamber

Cited by 27 publications

References 7 publications

Primary standards of radon

Primary standards of radon

Development of a transfer standard for the measurement of low Rn-222 activity concentration in air

Traceable measurements of the activity concentration in air

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