Back
Full-text
Journal article

Measurement of the cosmic ray proton spectrum from 40 GeV to 100 TeV with the DAMPE satellite.

  • An Q Department of Nuclear and Particle Physics, University of Geneva, Geneva CH-1211, Switzerland.
  • Asfandiyarov R Department of Nuclear and Particle Physics, University of Geneva, Geneva CH-1211, Switzerland.
  • Azzarello P Dipartimento di Matematica e Fisica E. De Giorgi, Università del Salento, I-73100 Lecce, Italy.
  • Bernardini P Institute of High Energy Physics, Chinese Academy of Sciences, Yuquan Road 19B, Beijing 100049, China.
  • Bi XJ Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Cai MS Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Chang J University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, China.
  • Chen DY State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Chen HF Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Chen JL University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, China.
  • Chen W Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Cui MY National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Cui TS State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Dai HT Dipartimento di Matematica e Fisica E. De Giorgi, Università del Salento, I-73100 Lecce, Italy.
  • D'Amone A Dipartimento di Matematica e Fisica E. De Giorgi, Università del Salento, I-73100 Lecce, Italy.
  • De Benedittis A Gran Sasso Science Institute (GSSI), Via Iacobucci 2, I-67100 L'Aquila, Italy.
  • De Mitri I Dipartimento di Matematica e Fisica E. De Giorgi, Università del Salento, I-73100 Lecce, Italy.
  • Di Santo M University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, China.
  • Ding M Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Dong TK Institute of High Energy Physics, Chinese Academy of Sciences, Yuquan Road 19B, Beijing 100049, China.
  • Dong YF National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Dong ZX Istituto Nazionale di Fisica Nucleare (INFN)-Sezione di Bari, I-70125, Bari, Italy.
  • Donvito G Department of Nuclear and Particle Physics, University of Geneva, Geneva CH-1211, Switzerland.
  • Droz D Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Duan JL University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, China.
  • Duan KK Istituto Nazionale di Fisica Nucleare (INFN)-Sezione di Perugia, I-06123 Perugia, Italy.
  • D'Urso D Institute of High Energy Physics, Chinese Academy of Sciences, Yuquan Road 19B, Beijing 100049, China.
  • Fan RR Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Fan YZ Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Fang F State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Feng CQ Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Feng L Istituto Nazionale di Fisica Nucleare (INFN)-Sezione di Bari, I-70125, Bari, Italy.
  • Fusco P Department of Nuclear and Particle Physics, University of Geneva, Geneva CH-1211, Switzerland.
  • Gallo V State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Gan FJ Institute of High Energy Physics, Chinese Academy of Sciences, Yuquan Road 19B, Beijing 100049, China.
  • Gao M Istituto Nazionale di Fisica Nucleare (INFN)-Sezione di Bari, I-70125, Bari, Italy.
  • Gargano F Institute of High Energy Physics, Chinese Academy of Sciences, Yuquan Road 19B, Beijing 100049, China.
  • Gong K Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Gong YZ Institute of High Energy Physics, Chinese Academy of Sciences, Yuquan Road 19B, Beijing 100049, China.
  • Guo DY Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Guo JH Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Guo XL National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Han SX Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Hu YM State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Huang GS Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Huang XY Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Huang YY Istituto Nazionale di Fisica Nucleare (INFN)-Sezione di Perugia, I-06123 Perugia, Italy.
  • Ionica M Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Jiang W State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Jin X Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Kong J Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Lei SJ University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, China.
  • Li S National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Li WL Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Li X National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Li XQ Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Li Y Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Liang YF National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Liang YM Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Liao NH State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Liu CM Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Liu H Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Liu J State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Liu SB Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Liu WQ Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Liu Y Istituto Nazionale di Fisica Nucleare (INFN)-Sezione di Bari, I-70125, Bari, Italy.
  • Loparco F Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Luo CN National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Ma M Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Ma PX State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Ma SY Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Ma T National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Ma XY Dipartimento di Matematica e Fisica E. De Giorgi, Università del Salento, I-73100 Lecce, Italy.
  • Marsella G Istituto Nazionale di Fisica Nucleare (INFN)-Sezione di Bari, I-70125, Bari, Italy.
  • Mazziotta MN Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Mo D Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Niu XY Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Pan X Institute of High Energy Physics, Chinese Academy of Sciences, Yuquan Road 19B, Beijing 100049, China.
  • Peng WX Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Peng XY Institute of High Energy Physics, Chinese Academy of Sciences, Yuquan Road 19B, Beijing 100049, China.
  • Qiao R National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Rao JN Department of Nuclear and Particle Physics, University of Geneva, Geneva CH-1211, Switzerland.
  • Salinas MM National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Shang GZ National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Shen WH University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, China.
  • Shen ZQ State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Shen ZT National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Song JX Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Su H Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Su M Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Sun ZY Istituto Nazionale di Fisica Nucleare (INFN)-Sezione di Lecce, I-73100 Lecce, Italy.
  • Surdo A National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Teng XJ Department of Nuclear and Particle Physics, University of Geneva, Geneva CH-1211, Switzerland.
  • Tykhonov A Department of Nuclear and Particle Physics, University of Geneva, Geneva CH-1211, Switzerland.
  • Vitillo S State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Wang C National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Wang H Institute of High Energy Physics, Chinese Academy of Sciences, Yuquan Road 19B, Beijing 100049, China.
  • Wang HY Institute of High Energy Physics, Chinese Academy of Sciences, Yuquan Road 19B, Beijing 100049, China.
  • Wang JZ National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Wang LG State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Wang Q University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, China.
  • Wang S Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Wang XH State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Wang XL State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Wang YF University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, China.
  • Wang YP University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, China.
  • Wang YZ Gran Sasso Science Institute (GSSI), Via Iacobucci 2, I-67100 L'Aquila, Italy.
  • Wang ZM Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Wei DM Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Wei JJ State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Wei YF State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Wen SC Institute of High Energy Physics, Chinese Academy of Sciences, Yuquan Road 19B, Beijing 100049, China.
  • Wu D Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Wu J State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Wu LB National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Wu SS Department of Nuclear and Particle Physics, University of Geneva, Geneva CH-1211, Switzerland.
  • Wu X Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Xi K Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Xia ZQ National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Xu HT Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Xu ZH Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Xu ZL State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Xu ZZ National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Xue GF Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Yang HB Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Yang P Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Yang YQ Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Yang ZL Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Yao HJ Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Yu YH Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Yuan Q University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, China.
  • Yue C Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Zang JJ Institute of High Energy Physics, Chinese Academy of Sciences, Yuquan Road 19B, Beijing 100049, China.
  • Zhang F Institute of High Energy Physics, Chinese Academy of Sciences, Yuquan Road 19B, Beijing 100049, China.
  • Zhang JY Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Zhang JZ Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Zhang PF Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Zhang SX National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Zhang WZ University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, China.
  • Zhang Y Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Zhang YJ State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Zhang YL Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Zhang YP University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, China.
  • Zhang YQ Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China.
  • Zhang Z State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Zhang ZY Institute of High Energy Physics, Chinese Academy of Sciences, Yuquan Road 19B, Beijing 100049, China.
  • Zhao H Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Zhao HY National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Zhao XF National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Zhou CY Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China.
  • Zhou Y State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Zhu X National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian District, Beijing 100190, China.
  • Zhu Y Department of Nuclear and Particle Physics, University of Geneva, Geneva CH-1211, Switzerland.
  • Zimmer S
Show more…
  • 2019-12-05
Published in:
  • Science advances. - 2019
English The precise measurement of the spectrum of protons, the most abundant component of the cosmic radiation, is necessary to understand the source and acceleration of cosmic rays in the Milky Way. This work reports the measurement of the cosmic ray proton fluxes with kinetic energies from 40 GeV to 100 TeV, with 2 1/2 years of data recorded by the DArk Matter Particle Explorer (DAMPE). This is the first time that an experiment directly measures the cosmic ray protons up to ~100 TeV with high statistics. The measured spectrum confirms the spectral hardening at ~300 GeV found by previous experiments and reveals a softening at ~13.6 TeV, with the spectral index changing from ~2.60 to ~2.85. Our result suggests the existence of a new spectral feature of cosmic rays at energies lower than the so-called knee and sheds new light on the origin of Galactic cosmic rays.
Language
  • English
Open access status
gold
Identifiers
Persistent URL
https://sonar.ch/global/documents/271630
Statistics
Document views: 31 File downloads:
  • Full-text: 0