The cosmic ray spectrum and composition measured by KASCADE-Grande between 1016 eV and 1018 eV

Nuclear physics. B, Proceedings, supplements Pub Date : 2014-11-01 DOI:10.1016/j.nuclphysbps.2014.10.018

M. Bertaina , W.D. Apel , J.C. Arteaga-Velázquez , K. Bekk , J. Blümer , H. Bozdog , I.M. Brancus , E. Cantoni , A. Chiavassa , F. Cossavella , K. Daumiller , V. de Souza , F. Di Pierro , P. Doll , R. Engel , J. Engler , B. Fuchs , D. Fuhrmann , A. Gherghel-Lascu , H.J. Gils , J. Zabierowski

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引用次数: 9

Abstract

The shape and composition of the primary spectrum of cosmic rays are key elements to understand the origin, acceleration and propagation of the Galactic cosmic rays. Besides the well known knee and ankle features, the recent results of KASCADE-Grande indicate that the measured energy spectrum exhibits also a less pronounced but still clear deviation from a single power law between the knee and the ankle, with a spectral hardening at 2 × 10¹⁶ eV and a steepening at 10¹⁷ eV. The average mass composition gets heavier after the knee till 10¹⁷ eV where a bending of the heavy component is observed. An indication of a hardening of the light component just above 10¹⁷ eV has been measured as well. In this paper the major results obtained so far by the KASCADE-Grande experiment are reviewed.

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KASCADE-Grande在1016 eV和1018 eV之间测量的宇宙射线光谱和成分

宇宙射线主光谱的形状和组成是了解银河系宇宙射线起源、加速和传播的关键因素。除了众所周知的膝关节和踝关节特征外，最近的KASCADE-Grande结果表明，测量的能谱也显示出不太明显但仍然明显偏离膝关节和踝关节之间的单一幂律，光谱在2 × 1016 eV时硬化，在1017 eV时变陡。平均质量成分在膝盖之后变得更重，直到1017 eV，在那里观察到重成分的弯曲。在1017 eV以上也测量到了轻质成分硬化的迹象。本文对KASCADE-Grande实验迄今取得的主要结果进行了综述。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Nuclear physics. B, Proceedings, supplements

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