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- W171405216 abstract "The shield is broken up into arbitrary layers with twofold attenuation of neutrons and with corresponding equalization of the neutron attenuation over the shield depth. This procedure was programmed on a computer for shielding computations. From this program it is possible to calculate integral fluxes of neutrons with energies of 0.1 to 14 MeV both within and outside the finite barrier edges of ltthium hydride which can be considered as a material consisting of /sup 1/H and /sup 7/Li atoms. The following interaction processes are taken into account: elastic scattering on hydrogen, elastic scattering on lithium, inelastic scattering on lithium, and absorption. The neutron (E > 1 MeV) attenuation is given as a function of the lithium hydride shield thickness for a plane source of fission neutrons. The fast neutron spectra at various shield depths are presented. In cylindrical, LiH block 45 g/cm/sup 2/ thick and 60 cm in diameter the neutron (E> 3 MeV) attenuation is given as a function of the shield-detector distance for neutron sources with various angular distributions. The fast neutron spectra are presented for the same LiH shield block at various distances from its surface with a mono-directed and cosinusoidal sources. Buildup factors are givenmore » as a function of the thickness of the cylindrical shield and of its radius (the source is mono-directed; the radii of the source and shield are equal). (SJR)« less" @default.
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- W171405216 date "1973-06-01" @default.
- W171405216 modified "2023-09-26" @default.
- W171405216 title "Fast neutron penetration through an axially-symmetrical shield" @default.
- W171405216 hasPublicationYear "1973" @default.
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