标题： LiBeB同位素的产生与随时间变化的银河宇宙射线通量 显示英文标题

标题： Production of the LiBeB isotopes with time-dependent GCR fluxes

摘要： 众所周知，没有任何不依赖时间的银河宇宙射线（GCR）通量模型能够解释观测到的Be和B丰度与金属量之间的线性关系。 在本篇贡献中，我们使用源处宇宙射线（CR）谱的简单解析时间依赖性、银河系CR逃逸长度和气体密度演化的模型来求解时间依赖的CR传播方程。 所得的CR通量用于研究银河系中LiBeB丰度的早期演化。 显示英文摘要

摘要： It is well known that no time-independent galactic cosmic ray (GCR) flux model can account for the observed linear relationship of Be and B abundances with metallicity. In this contribution we solve the time-dependent CR propagation equation using simple analytic time dependences for the CR spectrum at the source, the galactic CR escape-length and gas density evolution. The CR fluxes so obtained are used to study the early evolution of the LiBeB abundances in the Galaxy.