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)

电气工程学院

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

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7 引用（Scopus）

摘要

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.

源语言	英语
文章编号	201001
期刊	Physical Review Letters
卷	134
期	20
DOI	https://doi.org/10.1103/PhysRevLett.134.201001
出版状态	已出版 - 23 5月 2025

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10.1103/PhysRevLett.134.201001

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@article{870b50e940784f309169b2dfe21b1ac7,

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 Wang, \{Q. L.\}",

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 - Wang, Q. L.

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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