Observation program of isotope composition in the ultra heavy cosmic rays
Observation program of isotope composition in the ultra heavy cosmic rays
复制标题
超重宇宙线同位素组成观测计划
DOI：
10.1142/9789812773678_0037
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
S. Wanajo
中科院分区：
文献类型：
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作者：
N. Hasebe;M. Hareyama;S. Kodaira;K. Sakurai;N. Yamashita;T. Miyachi;O. Okudaira;M. Takano;S. Torii;T. Doke;K. Ogura;N. Yasuda;Y. Uchihori;H. Tawara;S. Nakamura;T. Shibata;T. Yanagimachi;S. Wanajo
超重宇宙线（UH-CRs）同位素组成的观测研究是轻同位素ACE测量之后的下一个重要步骤，因为这些宇宙线中的元素和同位素丰度都没有数据。这些丰度为中子俘获核合成提供了线索，这对于理解银河宇宙射线（GCR）的起源至关重要。目前正在计划在南极上空长期使用超压气球，该气球能够长期携带大型科学有效载荷。由固体径迹探测器（SSTD）组成的大型同位素谱仪阵列（丽莎）将首次测量Z ≥ 30、能量高于100 MeV/n的GCR的元素和同位素组成。
The observational study of isotopic composition of ultra-heavy cosmic rays (UH-CRs) is the next important step after the ACE measurement of light isotopes, since no data has been available for both elemental and isotopic abundances in these cosmic rays. These abundances provide the clue for neutron capture nucleosynthesis, which is an essential for understanding the origin of galactic cosmic rays (GCRs). Long-duration-super-pressure balloon over Antarctica capable of carrying large scientific payloads for a long period is under planning. A Large Isotope Spectrometer Array (LISA) made of solid-state track detectors (SSTD) will make the first measurement of the elemental and isotopic composition of GCRs for Z ≥ 30 in the energy above 100 MeV/n.