2020-01-27T09:09:35Z
https://www.heighpubs.org/oai/oai.php
oai:heighpubs.org:10.29328/journal.jro.1001002
2017-01-27
JRO:VOL1
Empirical formulae for calculating Î³-ray detectors effective solid angle ratio
Ahmed. M. El Khatib Mohamed. S. Badawi Mohamed. A. Elzaher Mona. M. Gouda Abouzeid. A. Thabet Mahmoud. I. AbbasKholud. S. Almugren
Determination of the detector efficiency using volumetric cylindrical sources is very important in various scientific and industrial fields, especially in the field of quantitative analysis. To calculate the absolute activity of any sample, the full-energy peak efficiency (FEPE) of the detector is needed.By applying the efficiency transfer method, the FEPE of the detector would be determined easily without using the standard sources. This approach depends on two main factors. The first one, is the reference efficiency of the reference source, which is determined experimentally, and the second one, is the calculation of the effective solid angle ratio between the sample and the reference source geometries. This work introduces an empirical formula for calculating the second factor for using two different sizes of NaI(Tl) detectors. The validity of this empirical formula was successfully demonstrated by comparing the calculating values with the experimental values.</p>
Journal of Radiology and Oncology - Heighten Science Publications Corporation
2017-01-27
Research Articlehttps://www.heighpubs.org/jro/jro-aid1002.phpenCopyright Â© Ahmed. M. El Khatib et al.