Spectra of cosmic-ray hadrons in the range 0. 1-1000 GeV

Conference · Sun Jan 01 04:00:00 EST 1984 · Adv. Space Res.; (United States)

OSTI ID:5605752

Nieminen, M; Torsti, J J; Valtonen, E; Arvela, H; Lumme, M; Peltonen, J; Vainikka, E

The energy spectra of cosmic-ray neutrons, protons, and pions were determined at sea level in the range 0.1 - 1000 GeV. The results are based on the measurements of the neutron-multiplicity distributions produced by cosmic hadrons in the Turku spectrometer. Below 0.5 GeV, the values gamma 1.47 + or - 0.04 and 0.8 + or - 0.1 were obtained for the slopes of the neutron and proton spectra. At 1000 GeV, the nucleon spectra are much steeper with gamma 2.79 + or 0.06. The pion spectrum was found to obey the power law with gamma 1.41 + or - 0.05 in the low-energy region up to 30 GeV. Above 500 GeV, the spectrum of pions, containing an admixture of accompanied particles, was found to reach the high energy limit with gamma 2.92 + or - 0.06. 7 references.

• Research Organization: Turku Univ., Finland
• OSTI ID: 5605752
• Report Number(s): CONF-8406167-
• Conference Information: Journal Name: Adv. Space Res.; (United States) Journal Volume: 4
• Country of Publication: United States
• Language: English

Related Subjects

640101* -- Astrophysics & Cosmology-- Cosmic Radiation
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BARYONS
BOSONS
COSMIC NEUTRONS
COSMIC PIONS
COSMIC PROTONS
COSMIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY SPECTRA
FERMIONS
GEV RANGE
HADRONS
IONIZING RADIATIONS
MEASURING INSTRUMENTS
MESONS
NEUTRONS
NUCLEONS
PIONS
PROTONS
PSEUDOSCALAR MESONS
RADIATIONS
SPECTRA
SPECTROMETERS