Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spectrum and mass composition of cosmic rays in the energy range
  10^15-10^18 eV derived from the Yakutsk array data   A spectrum of cosmic rays within energy range 10^15 - 3x10^17 eV was derived
from the data of the small Cherenkov setup, which is a part of the Yakutsk
complex EAS array. In this, work a new series of observation is covered. These
observations lasted from 2000 till 2010 and resulted in increased number of
registered events within interval 10^16 - 10^18 eV, which in turn made it
possible to reproduce cosmic ray spectrum in this energy domain with better
precision. A sign of a thin structure is observed in the shape of the spectrum.
It could be related to the escape of heavy nuclei from our Galaxy. Cosmic ray
mass composition was obtained for the energy region 10^16 - 10^18 eV. A joint
analysis of spectrum and mass composition of cosmic rays was performed.
Obtained results are considered in the context of theoretical computations that
were performed with the use of hypothesis of galactic and meta-galactic origin
of cosmic rays.

3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph