Flux of Primary Cosmic-Ray Electrons of Rigidity above 4.5 bv

Flux and Energy Spectrum of Primary Cosmic-Ray Electrons

“…The exponent has an error of about ±0.5. This spectrum falls inside the limits set by earlier determinations 1 ' 2 ' 5 and, if extrapolated beyond 4.5 BeV, is compatible with the results of Agrenier et al 3 An extrapolation to lower energies falls closely on the data which Cline, Ludwig, and McDonald 6 obtained below 10 MeV. Although it is interesting to note this point, it does not lead to any conclusions at this time.…”

“…The details of the mode-selection techniques will be given elsewhere. 3 The transverse mode structure was determined with the aid of a 1-m focal-length camera. The longitudinal mode structure was determined with the aid of a 2-cm spaced Fabry-Perot etalon with A/80 flat plates of ~1% transmission.…”

Electron Component of the Primary Cosmic Radiation at Energies ≳15 GeV

“…[It may be mentioned here that L/Heureux and Meyer 8 have reported a value of y = 0.6 for the energy region 500 MeV-3 GeV. From an analysis of 18 events observed by them, Agrinier et al 7 have indicated a steeper spectrum (y-2); a similar analysis of the 12 events observed by us indicates a value of y~0. 9.…”

“…We have attempted to deduce the shape of the integral energy spectrum of electrons at high energies from our observations and those of Agrinier et al 7 These are shown in Fig. 3.…”

Production of Low-Energy Cosmic-Ray Electrons

“…In order to determine, (for case ii), the behavior of n ( y , t ) when a steady state prevails, we must investigate the rate of energy loss, of Agrinier, et al (1964) and Daniel and Stephens (1965) were converted to differential intensities by assuming a slope of -1.5 and an infinitely high cutoff.…”