Properties of Iron Primary Cosmic Rays: Results from the Alpha Magnetic Spectrometer

AMS Collaboration

Properties of Iron Primary Cosmic Rays: Results from the Alpha Magnetic Spectrometer

AMS Collaboration

School of Electrical Engineering

Research output: Contribution to journal › Conference article › peer-review

Abstract

We report the observation of new properties of primary iron (Fe) cosmic rays in the rigidity range 2.65 GV to 3.0 TV with 0.62 million iron nuclei collected by the Alpha Magnetic Spectrometer experiment on the International Space Station. Above 80.5 GV the rigidity dependence of the cosmic ray Fe flux is identical to the rigidity dependence of the primary cosmic ray He, C, and O fluxes, with the Fe/O flux ratio being constant at 0.155±0.006. This shows that unexpectedly Fe and He, C, and O belong to the same class of primary cosmic rays which is different from the primary cosmic rays Ne, Mg, and Si class.

Original language	English
Article number	129
Journal	Proceedings of Science
Volume	395
State	Published - 18 Mar 2022
Event	37th International Cosmic Ray Conference, ICRC 2021 - Virtual, Berlin, Germany Duration: 12 Jul 2021 → 23 Jul 2021

Cite this

@article{9d156e9353a947ea962b5ee363c20e1a,

title = "Properties of Iron Primary Cosmic Rays: Results from the Alpha Magnetic Spectrometer",

abstract = "We report the observation of new properties of primary iron (Fe) cosmic rays in the rigidity range 2.65 GV to 3.0 TV with 0.62 million iron nuclei collected by the Alpha Magnetic Spectrometer experiment on the International Space Station. Above 80.5 GV the rigidity dependence of the cosmic ray Fe flux is identical to the rigidity dependence of the primary cosmic ray He, C, and O fluxes, with the Fe/O flux ratio being constant at 0.155±0.006. This shows that unexpectedly Fe and He, C, and O belong to the same class of primary cosmic rays which is different from the primary cosmic rays Ne, Mg, and Si class.",

author = "\{AMS Collaboration\} and Yao Chen and Mercedes Paniccia and M. Aguilar and \{Ali Cavasonza\}, L. and Allen, \{M. S.\} and B. Alpat and G. Ambrosi and L. Arruda and N. Attig and F. Barao and L. Barrin and A. Bartoloni and \{Ba{\c s}eğmez-Du Pree\}, S. and R. Battiston and M. Behlmann and B. Beischer and J. Berdugo and B. Bertucci and V. Bindi and \{de Boer\}, W. and K. Bollweg and B. Borgia and Boschini, \{M. J.\} and M. Bourquin and Bueno, \{E. F.\} and J. Burger and Burger, \{W. J.\} and S. Burmeister and Cai, \{X. D.\} and M. Capell and J. Casaus and G. Castellini and F. Cervelli and Chang, \{Y. H.\} and Chen, \{G. M.\} and Chen, \{G. R.\} and Chen, \{H. S.\} and L. Cheng and Chou, \{H. Y.\} and S. Chouridou and V. Choutko and Chung, \{C. H.\} and C. Clark and G. Coignet and C. Consolandi and A. Contin and C. Corti and Z. Cui and K. Dadzie and Wang, \{Q. L.\}",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s).; 37th International Cosmic Ray Conference, ICRC 2021 ; Conference date: 12-07-2021 Through 23-07-2021",

year = "2022",

month = mar,

day = "18",

language = "英语",

volume = "395",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

}

TY - JOUR

T1 - Properties of Iron Primary Cosmic Rays

T2 - 37th International Cosmic Ray Conference, ICRC 2021

AU - AMS Collaboration

AU - Chen, Yao

AU - Paniccia, Mercedes

AU - Aguilar, M.

AU - Ali Cavasonza, L.

AU - Allen, M. S.

AU - Alpat, B.

AU - Ambrosi, G.

AU - Arruda, L.

AU - Attig, N.

AU - Barao, F.

AU - Barrin, L.

AU - Bartoloni, A.

AU - Başeğmez-Du Pree, S.

AU - Battiston, R.

AU - Behlmann, M.

AU - Beischer, B.

AU - Berdugo, J.

AU - Bertucci, B.

AU - Bindi, V.

AU - de Boer, W.

AU - Bollweg, K.

AU - Borgia, B.

AU - Boschini, M. J.

AU - Bourquin, M.

AU - Bueno, E. F.

AU - Burger, J.

AU - Burger, W. J.

AU - Burmeister, S.

AU - Cai, X. D.

AU - Capell, M.

AU - Casaus, J.

AU - Castellini, G.

AU - Cervelli, F.

AU - Chang, Y. H.

AU - Chen, G. M.

AU - Chen, G. R.

AU - Chen, H. S.

AU - Cheng, L.

AU - Chou, H. Y.

AU - Chouridou, S.

AU - Choutko, V.

AU - Chung, C. H.

AU - Clark, C.

AU - Coignet, G.

AU - Consolandi, C.

AU - Contin, A.

AU - Corti, C.

AU - Cui, Z.

AU - Dadzie, K.

AU - Wang, Q. L.

PY - 2022/3/18

Y1 - 2022/3/18

N2 - We report the observation of new properties of primary iron (Fe) cosmic rays in the rigidity range 2.65 GV to 3.0 TV with 0.62 million iron nuclei collected by the Alpha Magnetic Spectrometer experiment on the International Space Station. Above 80.5 GV the rigidity dependence of the cosmic ray Fe flux is identical to the rigidity dependence of the primary cosmic ray He, C, and O fluxes, with the Fe/O flux ratio being constant at 0.155±0.006. This shows that unexpectedly Fe and He, C, and O belong to the same class of primary cosmic rays which is different from the primary cosmic rays Ne, Mg, and Si class.

AB - We report the observation of new properties of primary iron (Fe) cosmic rays in the rigidity range 2.65 GV to 3.0 TV with 0.62 million iron nuclei collected by the Alpha Magnetic Spectrometer experiment on the International Space Station. Above 80.5 GV the rigidity dependence of the cosmic ray Fe flux is identical to the rigidity dependence of the primary cosmic ray He, C, and O fluxes, with the Fe/O flux ratio being constant at 0.155±0.006. This shows that unexpectedly Fe and He, C, and O belong to the same class of primary cosmic rays which is different from the primary cosmic rays Ne, Mg, and Si class.

UR - https://www.scopus.com/pages/publications/85145260830

M3 - 会议文章

AN - SCOPUS:85145260830

SN - 1824-8039

VL - 395

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 129

Y2 - 12 July 2021 through 23 July 2021

ER -

Properties of Iron Primary Cosmic Rays: Results from the Alpha Magnetic Spectrometer

Abstract

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