Computer Science – Sound
Scientific paper
May 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jgr....80.1701f&link_type=abstract
Journal of Geophysical Research, vol. 80, May 1, 1975, p. 1701-1714.
Computer Science
Sound
22
Balloon Sounding, Galactic Radiation, Intermodulation, Particle Interactions, Primary Cosmic Rays, Solar Corpuscular Radiation, Absorption Spectroscopy, Alpha Particles, Balloon Flight, Diffusion Coefficient, Electron Energy, Energy Spectra, Mathematical Models, Proton Energy
Scientific paper
Measurements of the energy spectrum of primary cosmic-ray electrons by balloon-borne absorption spectrometers are reported, previous measurements of the electron spectrum are discussed, and a spherically symmetric model of cosmic-ray modulation is proposed which involves convection, diffusion, and adiabatic deceleration. Data are analyzed from 14 balloon flights made over a five-year period, and a mathematical modulation model is introduced and compared with the observations. The rigidity dependence of the diffusion coefficient is determined which produces modulated electron spectra in agreement with the observations, and modulated spectra are derived for other years by using the diffusion coefficient for 1 year to demodulate observed proton and alpha spectra. The model is found to yield good agreement with particle observations at energies greater than about 40 MeV/nucleon for protons and alphas and at all energies for electrons.
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