This article is cited in 11 papers

FIELDS, PARTICLES, AND NUCLEI

Spectra of protons and alpha particles and their comparison in the NUCLEON experiment data

D. E. Karmanov, I. M. Kovalev, I. A. Kudryashov, A. A. Kurganov, A. D. Panov, D. M. Podorozhny, A. N. Turundaevskiy, O. A. Vasiliev

Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, 119991 Russia

Abstract: The aim of the NUCLEON space experiment was to measure spectra of high-energy cosmic rays. Direct measurements of energy spectra of protons and nuclei of cosmic rays which allow separating particles in charge are required to solve important astrophysical problems. The satellite was launched on December 26, 2014, and operated for three years. Measured spectra of protons and alpha particles in the energy range of 2–500 TeV per particle have been presented. The results have been analyzed and compared to other experimental data for lower energies. The ratio of fluxes of protons and alpha particles is nearly constant in a wide range of magnetic rigidities (3–100 TV). Thus, the behavior of the ratio of the spectra is significantly different from a similar dependence in the region of lower magnetic rigidities measured in other experiments. One of the possible explanation of this effect can be given within a model with one close source.

Received: 20.12.2019
Revised: 13.03.2020
Accepted: 13.03.2020

DOI: 10.31857/S0370274X20070012

 English version: Journal of Experimental and Theoretical Physics Letters, 2020, 111:7, 363–367

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