Angular Distribution of Cosmic-Ray Particles

1933 ◽  
Vol 43 (12) ◽  
pp. 1038-1039 ◽  
Author(s):  
J. C. Stearns ◽  
R. D. Bennett
Keyword(s):  
Angular Distribution ◽  
Cosmic Ray

scholarly journals On the scattering of fast neutrons by protons

1947 ◽  
Vol 191 (1025) ◽  
pp. 195-209 ◽  
Keyword(s):  
Angular Distribution ◽  
Cross Section ◽  
Cosmic Ray ◽  
Fast Neutrons ◽  
Meson Mass ◽  
Nuclear Forces ◽  
Total Scattering ◽  
Empirical Results ◽  
Meson Theory ◽  
Total Scattering Cross Section

The features of the scattering of fast neutrons by protons are calculated using the Møller- Rosenfeld version of the meson theory of nuclear forces. The experimental results of Occhialini & Powell are used to check the predicted angular distribution of the scattered particles and to determine the mass of the meson; the meson mass indicated is about 215 electronic masses, which agrees with the mass of cosmic ray mesons. The total scattering cross-section predicted by the theory agrees with the empirical results.

scholarly journals Atmospheric Muons Measured with IceCube

2019 ◽  
Vol 208 ◽  
pp. 08007 ◽  
Author(s):  
Dennis Soldin
Keyword(s):  
Angular Distribution ◽  
Energy Spectrum ◽  
Cosmic Ray ◽  
Cherenkov Detector ◽  
South Pole ◽  
Lateral Separation ◽  
Hadronic Interactions ◽  
Air Shower ◽  
Shower Development ◽  
Detector Volume

IceCube is a cubic-kilometer Cherenkov detector in the deep ice at the geographic South Pole. The dominant event yield is produced by penetrating atmospheric muons with energies above several 100 GeV. Due to its large detector volume, IceCube provides unique opportunities to study atmospheric muons with large statistics in detail. Measurements of the energy spectrum and the lateral separation distribution of muons offer insights into hadronic interactions during the air shower development and can be used to test hadronic models. We will present an overview of various measurements of atmospheric muons in IceCube, including the energy spectrum of muons between 10 TeV and 1 PeV. This is used to derive an estimate of the prompt contribution of muons, originating from the decay of heavy (mainly charmed) hadrons and unflavored mesons. We will also present measurements of the lateral separation distributions of TeV muons between 150m and 450m for several initial cosmic ray energies between 1 PeV and 16 PeV. Finally, the angular distribution of atmospheric muons in IceCube will be discussed.

Charm hadroproduction cross-section up to 100 TeV from measurements of the cosmic-ray muon angular distribution. Results of the Mont Blanc experiment

1985 ◽  
Vol 8 (1) ◽  
pp. 93-104 ◽  
Author(s):  
A. Castellina ◽  
B. D'Ettorre Piazzoli ◽  
G. Mannocchi ◽  
P. Picchi ◽  
S. Vernetto ◽  
...  
Keyword(s):  
Angular Distribution ◽  
Cross Section ◽  
Cosmic Ray

scholarly journals GALACTIC COSMIC RAY ANISOTROPY MODELLING

2020 ◽  
Vol 6 (1) ◽  
pp. 36-42
Author(s):  
Dmitriy Peregudov ◽  
Anatoly Soloviev ◽  
Igor Yashin ◽  
Victor Shutenko
Keyword(s):  
Magnetic Field ◽  
Angular Distribution ◽  
Outer Space ◽  
Velocity Ratio ◽  
Cosmic Ray ◽  
Homogeneous Magnetic Field ◽  
Observation Point ◽  
Moving Cylinder ◽  
Galactic Cosmic Ray ◽  
Particle Area

We calculate the angular distribution of cosmic rays at a given point of the heliosphere under the assumption that the incoming flux from outer space is isotropic. The static magnetic field is shown to cause no anisotropy provided that the observation point is situated out of the trapped particle area. We consider a coronal ejection model in the form of a static cylinder with an axial homogeneous magnetic field inside. We calculate angular distribution samples in the trapped particle area (inside the cylinder) and show that there is a certain cone of directions with a reduced flux. For the same model with the moving cylinder, the angular distribution samples are calculated for different positions of the observation point outside the cylinder. Anisotropy of order of the ejection to light velocity ratio is shown to arise. The calculated samples are in qualitative agreement with URAGAN muon hodoscope data.

scholarly journals Ultrahigh Energy Cosmic-ray Accelerators

2000 ◽  
Vol 195 ◽  
pp. 303-310
Author(s):  
A. V. Olinto
Keyword(s):  
Angular Distribution ◽  
Neutron Star ◽  
Cosmic Rays ◽  
Cosmic Ray ◽  
High Energy ◽  
Ultrahigh Energy ◽  
Recent Proposal ◽  
Alternative Models ◽  
Isotropic Distribution ◽  
Energy Cutoff

The surprising lack of a high energy cutoff in the cosmic ray spectrum at the highest energies, together with an apparently isotropic distribution of arrival directions, have strongly challenged most models proposed for the acceleration of ultrahigh energy cosmic rays. Young neutron star winds may be able to explain the mystery. We discuss this recent proposal after summarizing the observational challenge and plausible acceleration sites. Young neutrons star winds differ from alternative models in the predictions for composition, spectrum, and angular distribution, which will be tested in future experiments.

Observations on the cosmic ray angular distribution underground at 1500 hg/cm2 (Kolar) and the question of muon production in the TeV energy region

1968 ◽  
Vol 27 (8) ◽  
pp. 535-538 ◽  
Author(s):  
M.R. Krishnaswamy ◽  
M.G.K. Menon ◽  
V.S. Narasimham ◽  
S. Kawakami ◽  
S. Kino ◽  
...  
Keyword(s):  
Angular Distribution ◽  
Energy Region ◽  
Cosmic Ray ◽  
Muon Production
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