Are protons still dominant at the knee of the cosmic-ray energy spectrum?
文献类型：期刊论文
| 作者 | Amenomori, M. ; Ayabe, S. ; Chen, D. ; Cui, S. W. ; Danzeluobu ; Ding, L. K. ; Ding, X. H. ; Feng, C. F. ; Feng, Z. ; Feng, Z. Y. ; Gao, X. Y. ; Geng, Q. X. ; Guo, H. W. ; He, H. H. ; He, M. ; Hibino, K. ; Hotta, N. ; Hu, H. ; Hu, H. B. ; Huang, J. ; Huang, Q. ; Jia, H. Y. ; Kajino, F. ; Kasahara, K. ; Katayose, Y. ; Kato, C. ; Kawata, K. ; Le GM(乐贵明) ; Li, A. F. ; Li, J. Y. ; Lou, Y. Q. ; Lu, H. ; Lu, S. L. ; Meng, X. R. ; Mizutani, K. ; Mu, J. ; Munakata, K. ; Nagai, A. ; Nanjo, H. ; Nishizawa, M. ; Ohnishi, M. ; Ohta, I. ; Onuma, H. ; Ouchi, T. ; Ozawa, S. ; Ren, J. ; Saito, T. ; Saito, T. Y. ; Sakata, M. ; Sako, T. K. ; Sasaki, T. ; Shibata, M. ; Shiomi, A. ; Shirai, T. ; Sugimoto, H. ; Takita, M. ; Tan, Y. H. ; Tateyama, N. ; Torii, S. ; Tsuchiya, H. ; Udo, S. ; Wang, B. ; Wang, H. ; Wang, X. ; Wang, Y. G. ; Wu, H. R. ; Xue, L. ; Yamamoto, Y. ; Yan, C. T. ; Yang, X. C. ; Yasue, S. ; Ye, Z. H. ; Yu, G. C. ; Yuan, A. F. ; Yuda, T. ; Zhang, H. M. ; Zhang, J. L. ; Zhang, N. J. ; Zhang, X. Y. ; Zhang, Y. ; Zhou, X. X. ; Collaborations, T. A. Y. |
| 刊名 | Physics Letters B
 |
| 出版日期 | 2006 |
| 卷号 | 632期号:1页码:58-64 |
| 关键词 | cosmic rays gamma-family neural network proton knee energy region shock acceleration hybrid-experiment region helium nuclei tibet |
| ISSN号 | 0370-2693 |
| 通讯作者 | 北京8701信箱 |
| 英文摘要 | A hybrid experiment consisting of emulsion chambers, burst detectors and the Tibet-11 air-shower array was carried out at Yangbajing (4300 m a.s.l., 606 g/cm(2)) in Tibet to obtain the energy spectra of primary protons and heliums. From three-year operation, these energy spectra are deduced between 10(15) and 10(16) eV by triggering the air showers associated with a high energy core and using a neural network method in the primary mass separation. The proton spectrum can be expressed by a single power-law function with a differential index of -3.01 +/- 0.11 and -3.05 +/- 0.12 based on the QGSJET + HD and SIBYLL + HD models, respectively, which are steeper than that extrapolated from the direct observations of -2.74 +/- 0.01 in the energy range below 10 14 eV. The absolute fluxes of protons and heliums are derived within 30% systematic errors depending on the hadronic interaction models used in Monte Carlo simulation. The result of our experiment suggests that the main component responsible for the change of the power index of the all-particle spectrum around 3 x 1015 eV, so-called "knee", is composed of nuclei heavier than helium. This is the first measurement of the differential energy spectra of primary protons and heliums by selecting them event by event at the knee energy region. |
| 学科主题 | 空间环境 |
| 收录类别 | SCI |
| 原文出处 | http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6TVN-4HDP8PW-M-2Y&_cdi=5539&_user=1999492&_orig=search&_coverDate=01%2F05%2F2006&_sk=993679998&view=c&wchp=dGLbVlb-zSkzk&md5=ff9b9e0574645bedd898a4f6104d3057&ie=/sdarticle.pdf |
| 语种 | 英语 |
| 源URL | [http://ir.cssar.ac.cn/handle/122/292]  |
| 专题 | 国家空间科学中心_空间环境部 |
| 推荐引用方式 GB/T 7714 | Amenomori, M.,Ayabe, S.,Chen, D.,et al. Are protons still dominant at the knee of the cosmic-ray energy spectrum?[J]. Physics Letters B,2006,632(1):58-64. |
| APA | Amenomori, M..,Ayabe, S..,Chen, D..,Cui, S. W..,Danzeluobu.,...&Collaborations, T. A. Y..(2006).Are protons still dominant at the knee of the cosmic-ray energy spectrum?.Physics Letters B,632(1),58-64. |
| MLA | Amenomori, M.,et al."Are protons still dominant at the knee of the cosmic-ray energy spectrum?".Physics Letters B 632.1(2006):58-64. |
入库方式： OAI收割
来源：国家空间科学中心
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