A computational modelling of low-energy gamma ray detection efficiency of a cylindrical NaI(Tl) detector

Thallium-activated sodium iodide (NaI(Tl)) detectors can be used in gamma cameras, environmental radiation assessments, including radiation emission levels from nuclear reactors, and radiation analysis equipment. This three-phase investigation aimed to model a standard NaI(Tl) detector using the Monte Carlo N-Particle eXtended (MCNPX) general-purpose Monte Carlo simulation techniques. Accordingly, a standard NaI(Tl) detector was designed along with the required properties. Next a validation study of the modelled NaI(Tl) detector has been performed based on the experimental results for absolute detector efficiency values obtained from 226Ra, 232Th, and 40K radioisotopes. Our findings indicate that the obtained absolute detector efficiency values are quite close to used experimental values. Finally, we used the modelled detector for determination of mass attenuation coefficients of Ordinary concrete, Lead, Hematite-serpentine concrete, and Steel-scrap concrete at 186.1, 295.22, 351.93, 609.31, 1120.29, 1764.49, 238.63, 911.2, 2614, and 1460.83 keV gamma-ray energies. Additionally, according to our findings, mass attenuation coefficients obtained from the newly designed detector are compatible with the standard NIST (XCOM) data. To conclude, continuous optimisation procedures are strongly suggested for sophisticated Monte Carlo simulations in order to maintain a high degree of simulation reliability. As a result, it can be concluded that the validation of the simulation model is necessary using measured data. Finally, it can also be concluded that the validated detector models are effective instruments for obtaining basic gamma-ray shielding parameters such as mass attenuation coefficients.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

A computational modelling of low-energy gamma ray detection efficiency of a cylindrical NaI(Tl) detector

Cited by 2 publications

References 21 publications

Preliminary investigations into optimizing detector configuration for nondestructive assay of fresh nuclear fuel

Preliminary investigations into optimizing detector configuration for nondestructive assay of fresh nuclear fuel

Calculation of NaI(Tl) detector efficiency using ²²⁶Ra, ²³²Th, and ⁴⁰K radioisotopes: Three-phase Monte Carlo simulation study

Contact Info

Product

Resources

About

A computational modelling of low-energy gamma ray detection efficiency of a cylindrical NaI(Tl) detector

Cited by 2 publications

References 21 publications

Preliminary investigations into optimizing detector configuration for nondestructive assay of fresh nuclear fuel

Preliminary investigations into optimizing detector configuration for nondestructive assay of fresh nuclear fuel

Calculation of NaI(Tl) detector efficiency using 226Ra, 232Th, and 40K radioisotopes: Three-phase Monte Carlo simulation study

Contact Info

Product

Resources

About

Calculation of NaI(Tl) detector efficiency using ²²⁶Ra, ²³²Th, and ⁴⁰K radioisotopes: Three-phase Monte Carlo simulation study