Title :
Shield thickness calculation by LTPN method
Author :
Lorenzini, Fabiane ; Streck, Elaine E.
Author_Institution :
Fac. de Fisica, Pontificia Univ. Catolica do Rio Grande do Sul, Porto Alegre, Brazil
Abstract :
The objective of this work was to determine the shield thickness for a photon source considering slab geometry, isotropic scattering and one-group energy model. For this purpose a method was used that combines the Laplace transform with the PN approximation (LTPN ) of the transport equation. The shield thickness was obtained iteratively by using an analytical expression, determined by the P1 approach, as an initial value. The good results obtained indicate that this methodology is applicable to the resolution of shield problems in transport theory
Keywords :
Laplace transforms; photon transport theory; radiation protection; shielding; LTPN method; Laplace transform; PN approximation; inverse matrix; isotropic scattering; one-group energy model; photon source; shield thickness calculation; slab geometry; transport equation; Boundary conditions; Differential equations; Electromagnetic scattering; Food industry; Geometry; Laplace equations; Particle scattering; Security; Slabs; Solid modeling;
Conference_Titel :
Engineering in Medicine and Biology Society, 2000. Proceedings of the 22nd Annual International Conference of the IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-6465-1
DOI :
10.1109/IEMBS.2000.900577
