@article{0d8405243d1e4c28a419fd70a92325a5,
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 A. Dass and Liqiu Wang",
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 = "English",
volume = "134",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "20",
}