Results 131 to 140 of about 1,300,084 (347)

Interactions of Cosmic Ray Nuclei [PDF]

arXiv, 1994
We present convenient formulae for the energy losses of energetic atomic nuclei over the entire energy range relevant to the physics of cosmic rays. Results are applied to a leaky-box equation with a complete loss term. Thereby we derive the equilibrium spectrum of cosmic rays in various types of galaxies.
arxiv  

The Curious Concept That Almost Nobody Seemed to Care About at First: Virtual Particles in the Post‐War Period**

Berichte zur Wissenschaftsgeschichte, EarlyView.
Abstract Short‐lived, unobservable, and not subject to the usual rules of conservation of energy and momentum, virtual particles—an integral part of the conceptual framework of quantum field theory (QFT)—exhibit a number of curious characteristics which, in recent decades, have in part fueled important discussions about their ontological status ...
Jean‐Philippe Martinez
wiley   +1 more source

Estimating Interplanetary Magnetic Field Conditions at Mercury's Orbit From MESSENGER Magnetosheath Observations Using a Feedforward Neural Network

Journal of Geophysical Research: Machine Learning and Computation
Mercury's small magnetosphere is embedded in the dynamic and intense solar wind environment characteristic of the inner heliosphere. Both the magnitude and orientation of the interplanetary magnetic field (IMF) significantly influence the solar wind ...
Charles F. Bowers, Caitríona M. Jackman, Abigail R. Azari, Andy W. Smith, Paul J. Wright, Matthew J. Rutala, Weijie Sun, Adam Healy   +7 more
doaj   +1 more source

Results from ALICE

EPJ Web of Conferences, 2013
ALICE, the dedicated heavy-ion experiment at the LHC, has also a rich pp program benefiting from its low material budget, low magnetic field, and its extensive particle identification capabilities.
Grosse-Oetringhaus Jan Fiete
doaj   +1 more source

Astronomy and Cosmical Physics at the British Association [PDF]

, 1902
A. R. H.
openalex   +1 more source

Cosmic-ray physics at the South Pole

Astroparticle Physics
The geographic South Pole provides unique opportunities to study cosmic particles in the Southern Hemisphere. It represents an optimal location to deploy large-scale neutrino telescopes in the deep Antarctic ice, such as AMANDA or IceCube. In both cases, the presence of an array, constructed to observe extensive air showers, enables hybrid measurements
Soldin, Dennis, Evenson, P. A., Kolanoski, Hermann, Watson, A. A.   +3 more
openaire   +5 more sources

The Vlasov Equation Cannot Fully Account for Collisionless Shocks

Contributions to Plasma Physics, EarlyView.
ABSTRACT It is argued that the Vlasov equation cannot fully account for collisionless shocks since it conserves entropy, while a shock does not. A rigorous mathematical theory of collisionless shocks could require working at the Klimontovich level.
Antoine Bret
wiley   +1 more source

Janossy: COSMIC RAYS AND NUCLEAR PHYSICS/Powell und Occhialini: NUCLEAR PHYSICS IN PHOTOGRAPHS [PDF]

, 1948
Schopper
openalex   +1 more source

Severity of effect considerations regarding the use of mutation as a toxicological endpoint for risk assessment: A report from the 8th International Workshop on Genotoxicity Testing (IWGT)

Environmental and Molecular Mutagenesis, EarlyView.
Abstract Exposure levels without appreciable human health risk may be determined by dividing a point of departure on a dose–response curve (e.g., benchmark dose) by a composite adjustment factor (AF). An “effect severity” AF (ESAF) is employed in some regulatory contexts.
Barbara L. Parsons, Marc A. Beal, Kerry L. Dearfield, George R. Douglas, Min Gi, B. Bhaskar Gollapudi, Robert H. Heflich, Katsuyoshi Horibata, Michelle Kenyon, Alexandra S. Long, David P. Lovell, Anthony M. Lynch, Meagan B. Myers, Stefan Pfuhler, Alisa Vespa, Andreas Zeller, George E. Johnson, Paul A. White   +17 more
wiley   +1 more source

PHYSICS OF EXTREMELY HIGH ENERGY COSMIC RAYS [PDF]

, 2000
X. Bertou, M. Boratav, A. Letessier‐Selvon   +2 more
openalex   +2 more sources