Results 211 to 220 of about 2,991,307 (240)

Secondary Cosmic Rays

2020
For the purpose of astroparticle physics the influence of the Sun’s and the Earth’s magnetic field is a perturbation, which complicates a search for the sources of cosmic rays. The solar activity produces an additional magnetic field, which prevents part of galactic cosmic rays from reaching Earth.
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Organic Responses to Cosmic Rays and Their Secondaries

1954
The invasion into the earth’s atmosphere and disintegration of cosmic protons is followed successively by the birth of π-mesons, μ-mesons, electrons, neutrinos, gamma photons, negatron-positron pairs, and ionization. Shower electrons are produced by cosmic-ray particles that penetrate into heavy matter.
G. Duell, B. Duell
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The cosmic ?-ray spectrum from secondary particle production in cosmic-ray interactions

Astrophysics and Space Science, 1970
The cosmic γ-ray spectrum below 1 GeV arising from cosmic ray p-p interactions is calculated. Its characteristics are determined by the properties of secondary neutral pion production occurring at accelerator energies. A model is chosen for numerical calculations in which the two dominant modes of neutral pion production at accelerator energies are the
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Secondary Cosmic Rays Underground and in the Atmosphere

2004
Primary CR of galactic and solar origin (mostly protons and nuclei of different Z) undergo nuclear interactions with air atoms and generate a lot of secondary particles (secondary CR). As will be shown in Chapter 11, secondary relativistic positrons and electrons are responsible for lightning between clouds and ground, and between two clouds, as well ...
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Theoretical predictions for cosmic ray secondary antiprotons

Advances in Space Research, 1997
Abstract We calculate the flux of secondary antiprotons produced by cosmic rays during propagation in the interstellar medium. We illustrate with several examples how the resulting antiproton to proton ratio as measured depends on the assumed primary spectrum and on propagation.
T.K Gaisser, R.K Schaefe
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The γ-ray and cosmic ray connection: Ulysses HET secondary radioisotope measurements and cosmic ray propagation

AIP Conference Proceedings, 2000
Cosmic rays constitute a super-thermal gas of charged particles magnetically confined within the Galaxy. Cosmic ray nuclei and electrons are a principal source of the diffuse γ-ray background in the Galaxy. Thus, understanding diffuse γ-ray production is directly related to understanding cosmic ray propagation in the Galaxy.
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A reevaluation of the atmospheric pressure dependence of secondary cosmic-ray neutrons in the context of Cosmic-Ray Neutron Sensing

2021
<p><span>Secondary cosmic-ray neutrons may be effectively used as a proxy for environmental hydrogen content at the hectare scale. These neutrons are generated mostly in the upper layers of the atmosphere within particle showers induced by galactic cosmic rays and other secondary particles.
Jannis Weimar, Paul Schattan, Martin Schrön, Markus Köhli, Rebecca Gugerli, Luca Stevanato, Stefan Achleitner, Ulrich Schmidt   +7 more
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The equilibrium spectra of secondary cosmic-ray positrons

Journal of Physics G: Nuclear Physics, 1986
The production spectra of charged hadrons ( pi +or-, kappa +or-) from the interaction of cosmic rays with the interstellar medium are first calculated based on newly parametrised inclusive cross sections of hadrons, taking exact kinematic limitations into account.
C M Wong, L K Ng
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On the secondary production of galactic cosmic ray electrons

Astrophysics and Space Science, 1972
The differential energy spectrum and charge ratio of primary cosmic ray electrons produced by collisions of primary cosmic ray particles with the interstellar medium is calculated by means of the two temperature statistical model of high-energy interactions. Two realistic models for the primary cosmic ray flux are considered.
L. M. Choate, J. R. Wayland
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Properties of Heavy Secondary Fluorine Cosmic Rays: Results from the Alpha Magnetic Spectrometer

Physical Review Letters, 2021
Jiahui Wei, Yi Jia, Geng Chen
exaly