THE RADIAL DIFFUSION COEFFICIENT OF 1.3 - 2.3 MeV PROTONS IN RECURRENT PROTON STREAMS
نویسندگان
چکیده
Direct estimates of the radial diffusion coefficient • for 1.3-2.3 MeV protons in rr interplanetary space are made by comparing simultaneous observations of the diffusive anisotropy and radial gradient of these particles within recurrent streams. The 1.3-2.3 MeV proton anisotropy has been measured at 1 AU by the Caltech Electron/Isotope Spectrometers on IMP-7 and 8 during recurrent proton events for which measurements of the radial intensity gradient have been reported. The resulting values for • near 1 AU range from (3 to 9) x 1020 cm2/sec, rr co responding to scattering mean free paths between 0.03 and 0.1 AU.
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