Journal
PHYSICAL REVIEW LETTERS
Volume 124, Issue 21, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.124.211102
Keywords
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Categories
Funding
- National Energy Research Scientific Computing Center [DE-AC02-05CH11231]
- 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
- Academy of Finland, Finland [321882]
- CNRS/IN2P3, France
- CNES, France
- DLR, Germany [50OO1403, 50OO1805]
- JARA-HPC, Germany [JARA0052]
- INFN under ASI-INFN, Italy [2019-19-HH.0, 2014037-R.0]
- ASI under ASI-INFN, Italy [2019-19-HH.0, 2014037-R.0]
- ASI-University of Perugia, Italy [2019-2-HH.0]
- CHEP at Kyungpook National University, Korea [NRF-2018R1A6A1A06024970]
- NRF at Kyungpook National University, Korea [NRF-2018R1A6A1A06024970]
- Consejo Nacional de Ciencia y Tecnologia, Mexico
- UNAM, Mexico
- NWO, Netherlands [680-1-004]
- FCT, Portugal [CERN/FIS-PAR/0013/2019]
- CIEMAT, Spain [ESP2017-87055-C2-1-P, SEV-2015-0548, MDM-2015-0509, RyC-2013-14660]
- IAC, Spain [ESP2017-87055-C2-1-P, SEV-2015-0548, MDM-2015-0509, RyC-2013-14660]
- CDTI, Spain [ESP2017-87055-C2-1-P, SEV-2015-0548, MDM-2015-0509, RyC-2013-14660]
- SEIDI-MINECO, Spain [ESP2017-87055-C2-1-P, SEV-2015-0548, MDM-2015-0509, RyC-2013-14660]
- Swiss National Science Foundation (SNSF), Switzerland
- Fondation Dr. Manfred Steuer, Switzerland
- Academia Sinica, Taiwan [103-2112-M-006-018-MY3, 105-2112-M-001003, CDA-105-M06]
- Ministry of Science and Technology (MOST), Taiwan [103-2112-M-006-018-MY3, 105-2112-M-001003, CDA-105-M06]
- Turkish Atomic Energy Authority, Turkey [2017TAEK(CERN) A5.H6.F2-15]
- NSF, U.S [14255202, 1551980]
- Wyle Laboratories, U.S [2014/T72497]
- NASA NESSF, U.S [HELIO15F-0005]
- Fundação para a Ciência e a Tecnologia [CERN/FIS-PAR/0013/2019] Funding Source: FCT
- Academy of Finland (AKA) [321882, 321882] Funding Source: Academy of Finland (AKA)
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We report the observation of new properties of primary cosmic rays, neon (Ne), magnesium (Mg), and silicon (Si), measured in the rigidity range 2.15 GV to 3.0 TV with 1.8 x 10(6) Ne, 2.2 x 10(6) Mg, and 1.6 x 10(6) Si nuclei collected by the Alpha Magnetic Spectrometer experiment on the International Space Station. The Ne and Mg spectra have identical rigidity dependence above 3.65 GV. The three spectra have identical rigidity dependence above 86.5 GV, deviate from a single power law above 200 GV, and harden in an identical way. Unexpectedly, above 86.5 GV the rigidity dependence of primary cosmic rays Ne, Mg, and Si spectra is different from the rigidity dependence of primary cosmic rays He, C, and O. This shows that the Ne, Mg, and Si and He, C, and O are two different classes of primary cosmic rays.
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