Indications of Proton-Dominated Cosmic-Ray Composition above 1.6 EeV
文献类型：期刊论文
| 作者 | The High Resolution Fly’s Eye Collaboration |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2010 |
| 卷号 | 104期号:16 |
| 关键词 | RESOLUTION FLYS-EYE EXTENSIVE AIR-SHOWERS FLUORESCENCE YIELD CALIBRATION SPECTRUM HIRES DETECTORS |
| 通讯作者 | Belz, JW (reprint author), Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA. |
| 英文摘要 | We report studies of ultrahigh-energy cosmic-ray composition via analysis of depth of air shower maximum (X(max)), for air shower events collected by the High-Resolution Fly's Eye (HiRes) observatory. The HiRes data are consistent with a constant elongation rate d < X(max)>/d[log(E)] of 47.9 +/- 6.0(stat) +/- 3.2(syst) g/cm(2)/decade for energies between 1.6 and 63 EeV, and are consistent with a predominantly protonic composition of cosmic rays when interpreted via the QGSJET01 and QGSJET-II high-energy hadronic interaction models. These measurements constrain models in which the galactic-to-extragalactic transition is the cause of the energy spectrum ankle at 4 x 10(18) eV. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000277007700010 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212940]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | The High Resolution Fly’s Eye Collaboration. Indications of Proton-Dominated Cosmic-Ray Composition above 1.6 EeV[J]. PHYSICAL REVIEW LETTERS,2010,104(16). |
| APA | The High Resolution Fly’s Eye Collaboration.(2010).Indications of Proton-Dominated Cosmic-Ray Composition above 1.6 EeV.PHYSICAL REVIEW LETTERS,104(16). |
| MLA | The High Resolution Fly’s Eye Collaboration."Indications of Proton-Dominated Cosmic-Ray Composition above 1.6 EeV".PHYSICAL REVIEW LETTERS 104.16(2010). |
入库方式： OAI收割
来源：高能物理研究所
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