中能重离子反应的中子屏蔽

Shielding of neutrons for the medium energy heavy ion interaction

中子是重离子反应辐射屏蔽的主要对象。本文从计算重离子反应的中子多重性出发,考虑到出射中子的角分布,以4×10^(11)ions/s,100MeV/AMU^(12)C离子轰击厚Cu靶为例.计算了出射中子的普通混凝土屏蔽。同时,计算了几种不同入射束流强度下的屏蔽厚度。

Neutrons are the main shielding object for the heavy ion interaction. In this paper, the concrete shielding thickness of neutrons generated from the medium energy heavy ion interaction were calculated, for a sample of a thick Cu target bombarded with a beam of 100MeV/amu 12C ions at intensity of 4×1011 ions/s. Starting with calculating the neutron multiplicity and accounting for the angular distribution of emitted neutrons, the shielding thickness for different beam current was calcalated.