A novel method of combined detector model for gamma-ray densitometer: Theoretical calculation and MCNP4C simulation
| Autor: | F. Babapour Mofrad, Dariush Sardari, S.M. Golgoun, Mahdi Sadeghi |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
Radiation Backscatter 010308 nuclear & particles physics business.industry Detector Gamma ray Analytical chemistry Linearity Function (mathematics) 01 natural sciences 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Optics Transmission (telecommunications) 0103 physical sciences Densitometer business Reduction (mathematics) |
| Zdroj: | Applied Radiation and Isotopes. 118:246-250 |
| ISSN: | 0969-8043 |
| DOI: | 10.1016/j.apradiso.2016.09.020 |
| Popis: | This study focuses on investigating a new model of combined backscatter and transmission method for nuclear densitometer. In this method for density measurement, a true combination of transmission and backscatter methods was studied and related equations were developed. The MCNP4C code was used for simulation of this combined detector model (CDM) and by applying theoretical calculations, density equation was corrected for the proposed nuclear densitometer. In the new method presented here, the buildup effect was estimated by an online system that was improved in our laboratory and was replaced by a new conceptual calculation. Hence, for the purpose of buildup reduction, there was no need for the shield around the detector, as it was monitored and reduced online. Furthermore, this study showed that the RSQ function could be improved by the CDM. The measurement technique proposed in this study has a better linearity trend than the transmission technique. Thus, the ability of CDM to improve the accuracy of the nuclear densitometer was shown. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect