Calculation of Gamma Ray Buildup Factors for a Very Thick Slab with Angular Eigenvalue Method

Autor:	Hiroyuki Kadotani, Akinao Shimizu
Rok vydání:	2000
Předmět:	Physics Nuclear and High Energy Physics business.industry Astrophysics::High Energy Astrophysical Phenomena Gamma ray Invariant embedding Optics Nuclear Energy and Engineering Transmission (telecommunications) Homogeneous Electromagnetic shielding Slab business Eigenvalues and eigenvectors
Zdroj:	Journal of Nuclear Science and Technology. 37:498-501
ISSN:	1881-1248 0022-3131
Popis:	The buildup factors of gamma rays are still widely used in the practical shielding calculations. Although the early compilation of buildup factors was published back to 50’s, it is still a tedious, though straightforward, task even for state-of-the-art computers. The most recent database of buildup factors covers the distance up to 40 mean free paths. The angular eigenvalue method, which was proposed by one of the author (A. S.) to calculate the transmission of gamma rays through a homogeneous slab, is based fundamentally on the invariant embedding method. This method has been applied to obtain the gamma ray buildup factors in homogeneous medium. It was found that the buildup factors were easily obtained for the distance over 40 mean free paths.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c4f80d02548b24cb12530ed2b0f444ae https://doi.org/10.1080/00223131.2000.10874936 Zobrazit plný text záznamu