Measurement of the cosmic-ray iron spectrum between 60 and 200 GeV per nucleon

Journal Article · Wed Feb 28 23:00:00 EST 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/168483· OSTI ID:6918087

Esposito, J A; Streitmatter, R E; Balasubrahmanyan, V K; Ormes, J F ^[1]

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1. NASA, Goddard Space Flight Center, Greenbelt, MD (USA)

A measurement of the spectral index of Galactic cosmic-ray (GCR) iron has been made using a high-energy gas Cerenkov spectrometer. The spectral index of GCR iron is found to be 2.56 + or - 0.11 in the energy range 57-200 GeV/ nucleon. This result indicates that the source spectrum of GCR iron is similar to that of other primary GCR nuclei and is consistent with the simplest models of GCR propagation. 24 refs.

• OSTI ID: 6918087
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 351; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640101* -- Astrophysics & Cosmology-- Cosmic Radiation
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BARYONS
CHERENKOV COUNTERS
COSMIC NUCLEI
COSMIC RADIATION
COSMIC RAY PROPAGATION
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
ENERGY SPECTRA
FERMIONS
GEV RANGE
GEV RANGE 10-100
GEV RANGE 100-1000
HADRONS
IONIZING RADIATIONS
IRON
MEASURING INSTRUMENTS
METALS
NUCLEI
NUCLEONS
RADIATION DETECTORS
RADIATIONS
SPECTRA
SPECTROMETERS
TRANSITION ELEMENTS