The Lambert-Beer law in time domain form and its application

Volodymyr Mosorov

doi:10.1016/j.apradiso.2017.06.039

The Lambert-Beer law in time domain form and its application

Appl Radiat Isot. 2017 Oct:128:1-5. doi: 10.1016/j.apradiso.2017.06.039. Epub 2017 Jun 27.

Author

Volodymyr Mosorov¹

Affiliation

¹ Institute of Applied Computer Science, Lodz University of Technology, Lodz 90-924, Poland.

PMID: 28675867
DOI: 10.1016/j.apradiso.2017.06.039

Abstract

The majority of current radioisotope gauges utilize measurements of intensity for a chosen sampling time interval using a detector. Such an approach has several disadvantages: temporal resolution of the gauge is fixed and the accuracy of the measurements is not the same for different count rate. The solution can be the use of a stronger radioactive source, but it will be conflicted with ALARA (As Low As Reasonably Achievable) principle. Therefore, the article presents an alternative approach which is based on modified Lambert-Beer law. The basis of the approach is the registration of time intervals instead of the registration of counts. It allows to increase the temporal resolution of a gauge without the necessity of using a stronger radioactive source and the accuracy of the measurements will not depend on count rate.

Keywords: Radioisotope gauge; Temporal resolution; Time interval registration.