深空條件下航天器內(nèi)的輻射環(huán)境研究

Study on space vehicle's inner radiation environment in deep space

摘要: 深空存在具有各種能量分布的粒子，這些能量分布范圍很寬的粒子構(gòu)成了深空環(huán)境下航天器外部的空間輻射環(huán)境。深空條件下的高能粒子會穿透航天器艙壁材料，通過射線與物質(zhì)材料的相互作用，在航天器內(nèi)產(chǎn)生二次粒子，形成由初級粒子、次級粒子疊加的混合輻射場的輻射環(huán)境。文章分析研究了高能α粒子及Fe離子在屏蔽材料中的輸運(yùn)過程，得到了在這些介質(zhì)中的射程與能量關(guān)系及產(chǎn)生的二次粒子產(chǎn)額，為控制航天器內(nèi)的輻射環(huán)境提供支撐。

Abstract: Man’s deep space exploration may expose crews to space radiation with a wide energy spectrum and abundant in species. Particles impinging on the surface of the space vehicle or shielding materials produce secondary particles, which, together with the primary radiation contribute significantly to the space vehicle’s inner radiation environment which astronauts would be exposed. In this paper, we simulate the transport process of alpha and Iron ion in shielding materials and analyze the characteristics of the inner radiation environment.

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