期刊
PHYSICAL REVIEW LETTERS
卷 120, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.120.021101
关键词
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资金
- DOE from National Energy Research Scientific Computing Center [DE-AC02-05CH11231]
- DOE from Argonne Leadership Computing Facility [DE-AC02-06CH11357]
- Sao Paulo Research Foundation (FAPESP), Brazil [2014/19149-7, 2015/50378-5, 2016/10222-9]
- CAS, China
- NSFC, China
- MOST, China
- provincial government of Shandong, China
- provincial government of Jiangsu, China
- provincial government of Guangdong, China
- China Scholarship Council, China
- Action H MSCA-IF under European Union [707543-MAtISSE]
- Finnish Funding Agency for Innovation (Tekes), Finland [40361/01, 40518/03]
- Academy of Finland, Finland [258963]
- CNRS/IN2P3, France
- CNES, France
- Enigmass, France
- ANR, France
- DLR, Germany [50OO1403]
- JARA-HPC, Germany [JARA0052]
- INFN, Italy
- ASI under ASI-INFN, Italy [2013-002-R.0, 2014-037-R.0]
- CHEP
- NRF at Kyungpook National University, Korea [NRF-2009-0080142, NRF-2012-010226]
- NRF at Ewha Womans University, Korea [NRF-2013-004883]
- Consejo Nacional de Ciencia y Tecnologia, Mexico
- UNAM, Mexico
- FCT, Portugal [PTDC/FIS/122567/2010]
- CIEMAT, Spain
- IAC, Spain
- CDTI, Spain
- SEIDI-MINECO, Spain [ESP2015-71662-C2-(1-P/2-P), SEV-2015-0548, MDM-2015-0509, RyC-2013-14660]
- Swiss National Science Foundation (SNSF)
- Academia Sinica
- Ministry of Science and Technology (MOST) [103-2112-M-006-018-MY3, 105-2112-M-001-003, CDA-105-M06]
- Turkish Atomic Energy Authority, Turkey [2017TEAK(CERN)A5.H6.F2-15]
- NSF, USA [14255202, 1551980]
- Wyle Laboratories Grant, USA [2014/T72497]
- NASA NESSF Grant, USA [HELIO15F-0005]
- federal authority, Switzerland
- cantonal authority, Switzerland
- Fundação para a Ciência e a Tecnologia [PTDC/FIS/122567/2010] Funding Source: FCT
We report on the observation of new properties of secondary cosmic rays Li, Be, and B measured in the rigidity (momentum per unit charge) range 1.9 GV to 3.3 TV with a total of 5.4 x 10(6) nuclei collected by AMS during the first five years of operation aboard the International Space Station. The Li and B fluxes have an identical rigidity dependence above 7 GV and all three fluxes have an identical rigidity dependence above 30 GV with the Li/Be flux ratio of 2.0 +/- 0.1. The three fluxes deviate from a single power law above 200 GV in an identical way. This behavior of secondary cosmic rays has also been observed in the AMS measurement of primary cosmic rays He, C, and O but the rigidity dependences of primary cosmic rays and of secondary cosmic rays are distinctly different. In particular, above 200 GV, the secondary cosmic rays harden more than the primary cosmic rays.
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