Lower limit on the ultrahigh-energy proton-to-helium ratio from the measurements of the tail of the Xmax distribution

There are multiple techniques to determine the chemical composition of the ultrahigh-energy cosmic rays. While most of the methods are primarily sensitive to the average atomic mass, it is challenging to discriminate between the two lightest elements: proton and helium. In this paper, the proton-to-...

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Veröffentlicht in:	Physical review. D 2018-11, Vol.98 (10), p.103002
Hauptverfasser:	Karpikov, Ivan S, Rubtsov, Grigory I, Zhezher, Yana V
Format:	Artikel
Sprache:	eng
Schlagworte:	Admixtures Astronomical models Atomic properties Augers Chemical composition Cosmic rays Helium Interaction models Organic chemistry Protons
Online-Zugang:	Volltext
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