Properties of Cosmic Deuterons Measured by the Alpha Magnetic Spectrometer

作者：M. Aguilar, B. Alpat, G. Ambrosi, H. R. Anderson, L. Arruda, N. Attig, Christopher E. Bagwell, F. Barão, M. Barbanera, L. Barrin, A. Bartoloni, R. Battiston, Ammar Bayyari, N. L. Belyaev, B. Bertucci, V. Bindi, K. Bollweg, J. Bolster, M. Borchiellini, B. Borgia, M. Boschini, M. Bourquin, C. Brugnoni, J.D. Burger, W. J. Burger, X.D. Cai, M. Capell, J. Casaus, G. Castellini, F. Cervelli, Y. H. Chang, G. M. Chen, G. R. Chen, H. Chen, H. S. Chen, Y. Chen, Lin Cheng, H. Y. Chou, S. Chouridou, V. Choutko, C. H. Chung, C. F. Clark, G. Coignet, C. Consolandi, A. Contin, C. Corti, Zheng Cui, S. Kokou Dadzie, Fulvio D’Angelo, Amala Dass, C. Delgado, S. Della Torre, B. Demirköz, L. Derome, S. Di Falco, V. Di Felice, C. Díaz, F. Dimiccoli, P. von Doetinchem, Fang Dong, F. Donnini, M. Duranti, A. I. Egorov, A. Eline, F. Faldi, D. Fehr, J. H. Feng, E. Fiandrini, P.H. Fisher, V. Formato, C. Gámez, R. J. Garcı́a López, Corrado Gargiulo, H. Gast, M. Gervasi, F. Giovacchini, D. M. Gómez-Coral, J. Gong, D. Grandi, M. Graziani, A. N. Guracho, S. Haino, Kyong Chol Han, R. K. Hashmani, Z. H. He, B. Heber, Timothy H. Hsieh, Jiangyong Hu, B. W. Huang, M. Ionica, M. Incagli, Yi Jia, H. Jinchi, G. Karagöz, S. Khan, B. Khiali, Th. Kirn, A. P. Klipfel, O. Kounina, A. Kounine, V. Koutsenko, D. Krasnopevtsev, A. Kuhlman, A. Kulemzin, G. La Vacca, E. Laudi, G. Laurenti, G. LaVecchia, I. Lazzizzera, H. T. Lee, S. C. Lee, H. L. Li, J. Q. Li, M. Li, M. Li, Qiang Li, Qiang Li, Q. Y. Li, S. Li, Shiliang Li, J. H. Li, Z. H. Li, M. J. Liang, Pu Liao, Chao‐Hung Lin, Thomas Lippert, J. H. Liu, P. C. Liu, S. Q. Lu, Yudong Lu, K. Luebelsmeyer, J. Luo, Q. Luo, Shan Luo, Xi Luo, C. Mañá, J. Marín, J. Marquardt, G. Martı́nez, N. Masi, D. Maurin, T. Medvedeva, A. Menchaca-Rocha, Q. Meng, V. V. Mikhailov, M. Molero, P. Mott, L. Mussolin, Y. Najafi Jozani, Riccardo Nicolaidis, N. Nikonov, F. Nozzoli, J. Ocampo-Peleteiro, A. Oliva, M. Orcinha, F. Palmonari, M. Paniccia, A. Pashnin, M. Pauluzzi, S. Pensotti, P. Pietzcker, V. Plyaskin, Stepan Poluianov, D. Pridöhl, Z. Y. Qu, L. Quadrani, P.G. Rancoita, D. Rapin, A. Reina Conde, E. Robyn, I. Rodríguez-García, Lisa Romaneehsen, F. Rossi, A. Rozhkov, D. Rozza, R. Z. Sagdeev, Evgeny Savin, S. Schael, A. Schultz von Dratzig, G. Schwering, E. S. Seo, B. S. Shan, A. Shukla, T. Siedenburg, G. Silvestre, Jiwei Song, Xiaojian Song, R. Sonnabend, Louis E. Strigari, T. Su, Qie Sun, Z. T. Sun, L. Tabarroni, M. Tacconi, Zichao Tang, Jie Tian, Y. Tian, Samuel C.C. Ting, S.M. Ting, Nicola Tomassetti, J. Torsti, T. J. Urban, Ilya Usoskin, V. Vagelli, Rami Vainio, M. Valencia-Otero, E. Valente, E. Valtonen, M. Vázquez Acosta, M. Vecchi, M. Velasco, C. X. Wang, L. Wang, Lei Wang, H. Wang, Q. L. Wang, S. Wang, X. Wang, Z. M. Wang, Chuncheng Wei, Z. Weng, H. Wu, Y. Wu, Zhibin Wu, J. N. Xiao, R. Q. Xiong, Xianze Xiong, W. Xu, Qi Yan, H. Yang, Y. Yang, Alexander M. Yelland, Han Yi, Y. H. You, Young Moon Yu, Z. Q. Yu, C. Zhang, F. Z. Zhang, J. Zhang, J. H. Zhang, Z. Zhang, Pei Zhao, C. Zheng, Z. M. Zheng, H.L. Zhuang, В. Жуков, A. Zichichi, P. Zuccon · 发表于：Physical Review Letters · 年份：2024 · DOI：10.1103/physrevlett.132.261001 · 被引用次数：20 · 研究领域：Dark Matter and Cosmic Phenomena、Neutrino Physics Research、Astrophysics and Cosmic Phenomena

Precision measurements by the Alpha Magnetic Spectrometer (AMS) on the International Space Station of the deuteron (D) flux are presented. The measurements are based on 21×10^{6} D nuclei in the rigidity range from 1.9 to 21 GV collected from May 2011 to April 2021. We observe that over the entire rigidity range the D flux exhibits nearly identical time variations with the p, ^{3}He, and ^{4}He fluxes. Above 4.5 GV, the D/^{4}He flux ratio is time independent and its rigidity dependence is well described by a single power law ∝R^{Δ} with Δ_{D/^{4}He}=-0.108±0.005. This is in contrast with the ^{3}He/^{4}He flux ratio for which we find Δ_{^{3}He/^{4}He}=-0.289±0.003. Above ∼13 GV we find a nearly identical rigidity dependence of the D and p fluxes with a D/p flux ratio of 0.027±0.001. These unexpected observations indicate that cosmic deuterons have a sizable primarylike component. With a method independent of cosmic ray propagation, we obtain the primary component of the D flux equal to 9.4±0.5% of the ^{4}He flux and the secondary component of the D flux equal to 58±5% of the ^{3}He flux.