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AMS宇宙线氟原子核流强谱结果

16 Aug 2021, 17:00
15m
Oral report 4. 中微子物理、粒子天体物理与宇宙学 Parallel Session IV:Neutrino, Astroparticle Physics and Cosmology

Speaker

扈嘉钰

Description

报告展示AMS测量得到的宇宙线氟原子核流强谱在2.15 GV至2.9 TV刚度能区的精确结果,基于收集到的29万氟原子核事例。从流强谱结果可以看到:氟原子核流强谱在200GV以上能区不服从单一幂律谱;重核次级-初级宇宙线比率(F/Si)的随刚度变化趋势与轻核的次级-初级宇宙线比率(B/O或B/C)不同,具体而言10GV以上能区(F/Si)/(B/O)可以用单一幂指数分布描述(幂率为0.052±0.007)。这说明氟到硅的重核宇宙线与氦到氧的轻核宇宙线有不同的宇宙线传播机制,且有两种不同类型的次级宇宙线:氦碳氧和氟。

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