Electromagnetic interactions of cosmic ray muons in iron. II. Momentum dependence of the interaction probabilities

1972 ◽  
Vol 5 (12) ◽  
pp. 1713-1721 ◽  
Author(s):  
C Grupen ◽  
M A Hamdan ◽  
S Hansen ◽  
M G Thompson ◽  
A W Wolfendale ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Momentum Dependence ◽  
Electromagnetic Interactions

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.

Electromagnetic Interactions of High-Energy Cosmic-Ray Muons

1971 ◽  
Vol 4 (3) ◽  
pp. 638-646 ◽  
Author(s):  
O. C. Allkofer ◽  
C. Grupen ◽  
W. Stamm
Keyword(s):  
Cosmic Ray ◽  
High Energy ◽  
Electromagnetic Interactions

Electromagnetic interactions of cosmic ray muons in iron. I. Search for a charge asymmetry

1972 ◽  
Vol 5 (12) ◽  
pp. 1706-1712 ◽  
Author(s):  
C Grupen ◽  
M A Hamdan ◽  
S Hansen ◽  
M G Thompson ◽  
A W Wolfendale ◽  
...  
Keyword(s):  
Charge Asymmetry ◽  
Cosmic Ray ◽  
Electromagnetic Interactions ◽  
A Charge

Muon interactions in the energy range 5 to 1 000 GeV

1968 ◽  
Vol 46 (10) ◽  
pp. S365-S368 ◽  
Author(s):  
G. N. Kelly ◽  
P. K. MacKeown ◽  
S. S. Said ◽  
A. W. Wolfendale
Keyword(s):  
Energy Range ◽  
Pair Production ◽  
High Probability ◽  
Considerable Increase ◽  
Cosmic Ray ◽  
Ground Level ◽  
Muon Energy ◽  
Frequency Of Occurrence ◽  
Electromagnetic Showers ◽  
Electromagnetic Interactions

The Durham Horizontal Spectrograph has been used to study the variation with energy of the frequency of electromagnetic interactions of muons. A considerable increase in the frequency of occurrence of electromagnetic showers with muon energy is observed and is attributable in the main to direct pair production. The form of the variation with energy of the interaction probabilities and the frequency of successive interactions of the same particle are consistent with all the particles being muons, and it is concluded that there is no evidence in favor of the existence of particles having an unusually high probability of burst production–the X particles postulated by Vernov et al. (1966)–at least in the near-horizontal cosmic-ray beam at ground level.

Electromagnetic interactions of cosmic-ray muons up to 10 TeV (pair productions and bremsstrahlung)

1983 ◽  
Vol 73 (3) ◽  
pp. 235-261 ◽  
Author(s):  
K. Mitsui ◽  
A. Okada ◽  
Y. Kawashima ◽  
T. Kitamura ◽  
S. Matsuno ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Electromagnetic Interactions
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