The effect of ionisation loss on the energy spectra of cosmic ray nuclei undergoing fermi acceleration

1967 ◽  
Vol 65 (4) ◽  
pp. 219-226 ◽  
Author(s):  
S. Ramadurai
Keyword(s):  
Cosmic Ray ◽  
Energy Spectra ◽  
Fermi Acceleration ◽  
Ionisation Loss

EARLY RESULTS FROM THE HIGH-RESOLUTION FLY's EYE

2001 ◽  
Vol 16 (supp01c) ◽  
pp. 1019-1021
Author(s):  
JOHN BELZ
Keyword(s):  
High Resolution ◽  
Cosmic Ray ◽  
Energy Spectra ◽  
Fluorescence Technique ◽  
Early Results ◽  
One Year ◽  
High Resolution Fly's Eye

The High-Resolution Fly's Eye cosmic ray observatory has been operating in monocular (stereo) mode for about three years (one year), during which time we have observed extensive airshowers with an integrated aperture of ~ 1500 km2-sr-yr (~ 400 km-sr-yr) at 5×1019 eV. We describe the HiRes experiment and the nitrogen fluorescence technique, and present data taken in both monocular and stereo modes including preliminary energy spectra.

Energy spectra of different groups of cosmic ray nuclei from Cerenkov counter measurements in satellite vehicles

1963 ◽  
Vol 11 (2) ◽  
pp. 193-208
Author(s):  
L.V. Kurnosova ◽  
V.I. Logachev ◽  
L.A. Razorenov ◽  
M.I. Fradkin
Keyword(s):  
Cosmic Ray ◽  
Energy Spectra ◽  
Cerenkov Counter

scholarly journals ENERGY SPECTRA OF PRIMARY AND SECONDARY COSMIC-RAY NUCLEI MEASURED WITH TRACER

2011 ◽  
Vol 742 (1) ◽  
pp. 14 ◽  
Author(s):  
A. Obermeier ◽  
M. Ave ◽  
P. Boyle ◽  
Ch. Höppner ◽  
J. Hörandel ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Energy Spectra

scholarly journals Galactic cosmic-ray energy spectra and expected solar events at the time of future space missions

2011 ◽  
Vol 28 (9) ◽  
pp. 094005 ◽  
Author(s):  
C Grimani ◽  
H M Araújo ◽  
M Fabi ◽  
A Lobo ◽  
I Mateos ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Space Missions ◽  
Energy Spectra ◽  
Future Space ◽  
Solar Events ◽  
Galactic Cosmic Ray

Composition and spectra of primary cosmic-ray electrons and nuclei above 10 10 eV

1975 ◽  
Vol 277 (1270) ◽  
pp. 349-363 ◽  
Keyword(s):  
Cosmic Ray ◽  
High Energy ◽  
Energy Spectra ◽  
Average Lifetime ◽  
Interstellar Space ◽  
Interstellar Matter ◽  
Electromagnetic Interactions ◽  
Nuclear Species ◽  
The Galaxy ◽  
High Energy Particles

Recent experiments have extended the knowledge of the flux and energy spectra of individual cosmic-ray components to much higher energies than had previously been accessible. Both electron and nuclear components show a behaviour at high energy which is unexpected, and which carries information regarding the sources and the propagation of particles between sources and observer. Electromagnetic interactions which are suffered by the electrons in interstellar space should steepen their spectrum, a steepening that would reveal the average lifetime a cosmic-ray particle spends in the galaxy. Measurements up to 1000 GeV show no such steepening. It was discovered that the composition of the nuclear species which is now measured up to 100 GeV/nucleon changes with energy. This change indicates traversal of less interstellar matter by the high energy particles than by those of lower energy. We discuss the experimental evidence and its implication.

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