Properties of Cosmic Lithium Isotopes Measured by the Alpha Magnetic Spectrometer

(AMS Collaboration)

doi:10.1103/PhysRevLett.134.201001

Properties of Cosmic Lithium Isotopes Measured by the Alpha Magnetic Spectrometer

(AMS Collaboration)

School of Artificial Intelligence(Institute of Artificial Intelligence)

CIEMAT
National Institute for Nuclear Physics
Massachusetts Institute of Technology
Laboratório de Instrumentação e Física Experimental de Partículas
Jülich Research Centre
CERN
University of Trento
University of Hawai'i at Mānoa
University of Perugia
NASA Johnson Space Center
University of Groningen
University of Rome La Sapienza
University of Geneva
National Research Council of Italy
Academia Sinica - Institute of Physics
CAS - Institute of High Energy Physics
University of Chinese Academy of Sciences
Shandong Institute of Advanced Technology
Zhejiang University
RWTH Aachen University
Université Grenoble Alpes
University of Bologna
Shandong University
Middle East Technical University
Southeast University, Nanjing
Sun Yat-Sen University
Instituto de Astrofísica de Canarias
University of La Laguna
University of Milan - Bicocca
Universidad Nacional Autónoma de México
Chung-shan Institute of Science and Technology Taiwan
Kiel University
Academia Sinica Taiwan HQ
CAS - Institute of Electrical Engineering
University of Oulu
University of Maryland, College Park
Also at IRCCS Azienda Ospedaliero-Universitaria di Bologna
University of Turku
Italian Space Agency
National Central University
National Cheng Kung University
Beihang University

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We present the first measurement of cosmic-ray fluxes of Li6 and Li7 isotopes in the rigidity range from 1.9 to 25 GV. The measurements are based on 9.7×105 Li6 and 1.04×106 Li7 nuclei collected by the Alpha Magnetic Spectrometer on the International Space Station from May 2011 to October 2023. We observe that over the entire rigidity range the Li6 and Li7 fluxes exhibit nearly identical time variations and, above ∼4 GV, the time variations of Li6, Li7, He, Be, B, C, N, and O fluxes are identical. Above ∼7 GV, we find an identical rigidity dependence of the Li6 and Li7 fluxes. This shows that they are both produced by collisions of heavier cosmic-ray nuclei with the interstellar medium and, in particular, excludes the existence of a sizable primary component in the Li7 flux.

Original language	English
Article number	201001
Journal	Physical Review Letters
Volume	134
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.134.201001
State	Published - 23 May 2025

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10.1103/PhysRevLett.134.201001

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@article{c8d28a1857e94fcda0f41726ef25a469,

title = "Properties of Cosmic Lithium Isotopes Measured by the Alpha Magnetic Spectrometer",

abstract = "We present the first measurement of cosmic-ray fluxes of Li6 and Li7 isotopes in the rigidity range from 1.9 to 25 GV. The measurements are based on 9.7×105 Li6 and 1.04×106 Li7 nuclei collected by the Alpha Magnetic Spectrometer on the International Space Station from May 2011 to October 2023. We observe that over the entire rigidity range the Li6 and Li7 fluxes exhibit nearly identical time variations and, above ∼4 GV, the time variations of Li6, Li7, He, Be, B, C, N, and O fluxes are identical. Above ∼7 GV, we find an identical rigidity dependence of the Li6 and Li7 fluxes. This shows that they are both produced by collisions of heavier cosmic-ray nuclei with the interstellar medium and, in particular, excludes the existence of a sizable primary component in the Li7 flux.",

author = "\{(AMS Collaboration)\} and M. Aguilar and G. Ambrosi and H. Anderson and L. Arruda and N. Attig and C. Bagwell and F. Barao and M. Barbanera and L. Barrin and A. Bartoloni and R. Battiston and A. Bayyari and N. Belyaev and B. Bertucci and V. Bindi and K. Bollweg and J. Bolster and M. Borchiellini and B. Borgia and Boschini, \{M. J.\} and M. Bourquin and C. Brugnoni and J. Burger and Burger, \{W. J.\} and N. Burzill{\`a} 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 H. Chen and Chen, \{H. S.\} and Y. Chen 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 F. D'Angelo and Shan, \{B. S.\}",

note = "Publisher Copyright: {\textcopyright} 2025 authors. Published by the American Physical Society.",

year = "2025",

month = may,

day = "23",

doi = "10.1103/PhysRevLett.134.201001",

language = "英语",

volume = "134",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "20",

}

TY - JOUR

T1 - Properties of Cosmic Lithium Isotopes Measured by the Alpha Magnetic Spectrometer

AU - (AMS Collaboration)

AU - Aguilar, M.

AU - Ambrosi, G.

AU - Anderson, H.

AU - Arruda, L.

AU - Attig, N.

AU - Bagwell, C.

AU - Barao, F.

AU - Barbanera, M.

AU - Barrin, L.

AU - Bartoloni, A.

AU - Battiston, R.

AU - Bayyari, A.

AU - Belyaev, N.

AU - Bertucci, B.

AU - Bindi, V.

AU - Bollweg, K.

AU - Bolster, J.

AU - Borchiellini, M.

AU - Borgia, B.

AU - Boschini, M. J.

AU - Bourquin, M.

AU - Brugnoni, C.

AU - Burger, J.

AU - Burger, W. J.

AU - Burzillà, N.

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.

AU - Chen, H. S.

AU - Chen, Y.

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 - D'Angelo, F.

AU - Shan, B. S.

PY - 2025/5/23

Y1 - 2025/5/23

N2 - We present the first measurement of cosmic-ray fluxes of Li6 and Li7 isotopes in the rigidity range from 1.9 to 25 GV. The measurements are based on 9.7×105 Li6 and 1.04×106 Li7 nuclei collected by the Alpha Magnetic Spectrometer on the International Space Station from May 2011 to October 2023. We observe that over the entire rigidity range the Li6 and Li7 fluxes exhibit nearly identical time variations and, above ∼4 GV, the time variations of Li6, Li7, He, Be, B, C, N, and O fluxes are identical. Above ∼7 GV, we find an identical rigidity dependence of the Li6 and Li7 fluxes. This shows that they are both produced by collisions of heavier cosmic-ray nuclei with the interstellar medium and, in particular, excludes the existence of a sizable primary component in the Li7 flux.

AB - We present the first measurement of cosmic-ray fluxes of Li6 and Li7 isotopes in the rigidity range from 1.9 to 25 GV. The measurements are based on 9.7×105 Li6 and 1.04×106 Li7 nuclei collected by the Alpha Magnetic Spectrometer on the International Space Station from May 2011 to October 2023. We observe that over the entire rigidity range the Li6 and Li7 fluxes exhibit nearly identical time variations and, above ∼4 GV, the time variations of Li6, Li7, He, Be, B, C, N, and O fluxes are identical. Above ∼7 GV, we find an identical rigidity dependence of the Li6 and Li7 fluxes. This shows that they are both produced by collisions of heavier cosmic-ray nuclei with the interstellar medium and, in particular, excludes the existence of a sizable primary component in the Li7 flux.

UR - https://www.scopus.com/pages/publications/105006759828

U2 - 10.1103/PhysRevLett.134.201001

DO - 10.1103/PhysRevLett.134.201001

M3 - 文章

C2 - 40479677

AN - SCOPUS:105006759828

SN - 0031-9007

VL - 134

JO - Physical Review Letters

JF - Physical Review Letters

IS - 20

M1 - 201001

ER -

Properties of Cosmic Lithium Isotopes Measured by the Alpha Magnetic Spectrometer

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