Zobrazit v EDS

Point-Kernel Code Development for Gamma-Ray Shielding Applications

Uloženo v:
Podrobná bibliografie
Název: Point-Kernel Code Development for Gamma-Ray Shielding Applications
Autoři: Mario Matijević, Krešimir Trontl, Siniša Šadek, Paulina Družijanić
Zdroj: Applied Sciences, Vol 15, Iss 14, p 7795 (2025)
Applied Sciences
Volume 15
Issue 14
Informace o vydavateli: MDPI AG, 2025.
Rok vydání: 2025
Témata: Technology, QH301-705.5, Physics, QC1-999, variance reduction, buildup factor, TECHNICAL SCIENCES. Electrical Engineering. Power Engineering, Engineering (General). Civil engineering (General), Chemistry, point-kernel, TECHNICAL SCIENCES. Computing. Program Engineering, TEHNIČKE ZNANOSTI. Elektrotehnika. Elektroenergetika, gamma-ray, slab shield, SCALE6.1.3, CADIS, TA1-2040, Biology (General), TEHNIČKE ZNANOSTI. Računarstvo. Programsko inženjerstvo, Monte Carlo, QD1-999, radiation shielding
Popis: The point-kernel (PK) technique has a long history in applied radiation shielding, originating from the early days of digital computers. The PK technique applied to gamma-ray attenuation is one of many successful applications, based on the linear superposition principle applied to distributed radiation sources. Mathematically speaking, the distributed source will produce a detector response equivalent to the numerical integration of the radiation received from an equivalent number of point sources. In this treatment, there is no interference between individual point sources, while inherent limitations of the PK method are its inability to simulate gamma scattering in shields and the usage of simple boundary conditions. The PK method generally works for gamma-ray shielding with corrective B-factor for scattering and only specifically for fast neutron attenuation in a hydrogenous medium with the definition of cross section removal. This paper presents theoretical and programming aspects of the PK program developed for a distributed source of photons (line, disc, plane, sphere, slab volume, etc.) and slab shields. The derived flux solutions go beyond classical textbooks as they include the analytical integration of Taylor B-factor, obtaining a closed form readily suitable for programming. The specific computational modules are unified with a graphical user interface (GUI), assisting users with input/output data and visualization, developed for the fast radiological characterization of simple shielding problems. Numerical results of the selected PK test cases are presented and verified with the CADIS hybrid shielding methodology of the MAVRIC/SCALE6.1.3 code package from the ORNL.
Druh dokumentu: Article
Popis souboru: application/pdf
Jazyk: English
ISSN: 2076-3417
DOI: 10.3390/app15147795
Přístupová URL adresa: https://doaj.org/article/dd1a8993dd254803a983da09cd07c49c
https://www.mdpi.com/2076-3417/15/14/7795/pdf
https://doi.org/10.3390/app15147795
https://repozitorij.fer.unizg.hr/islandora/object/fer:13688
https://repozitorij.fer.unizg.hr/islandora/object/fer:13688/datastream/FILE0
https://urn.nsk.hr/urn:nbn:hr:168:785770
Rights: CC BY
Přístupové číslo: edsair.doi.dedup.....3bfc440c76389aa78f16cb2160fe4dd1
Databáze: OpenAIRE
Popis
Abstrakt:The point-kernel (PK) technique has a long history in applied radiation shielding, originating from the early days of digital computers. The PK technique applied to gamma-ray attenuation is one of many successful applications, based on the linear superposition principle applied to distributed radiation sources. Mathematically speaking, the distributed source will produce a detector response equivalent to the numerical integration of the radiation received from an equivalent number of point sources. In this treatment, there is no interference between individual point sources, while inherent limitations of the PK method are its inability to simulate gamma scattering in shields and the usage of simple boundary conditions. The PK method generally works for gamma-ray shielding with corrective B-factor for scattering and only specifically for fast neutron attenuation in a hydrogenous medium with the definition of cross section removal. This paper presents theoretical and programming aspects of the PK program developed for a distributed source of photons (line, disc, plane, sphere, slab volume, etc.) and slab shields. The derived flux solutions go beyond classical textbooks as they include the analytical integration of Taylor B-factor, obtaining a closed form readily suitable for programming. The specific computational modules are unified with a graphical user interface (GUI), assisting users with input/output data and visualization, developed for the fast radiological characterization of simple shielding problems. Numerical results of the selected PK test cases are presented and verified with the CADIS hybrid shielding methodology of the MAVRIC/SCALE6.1.3 code package from the ORNL.
ISSN:20763417
DOI:10.3390/app15147795