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Detailed Reference Information
Rothwell et al. 1975
Rothwell, P.L., Katz, L., Yates, G.K., Sellers, B. and Hanser, F.A. (1975). Interpretation of flare-produced proton spectra. Journal of Geophysical Research 80: doi: 10.1029/JA080i034p04757. issn: 0148-0227.

Flare-produced proton (1.3--40 MeV) energy spectra from the extramagnetospheric satellite OV5-6 (1969-046B) are examined for the October 29 to November 5, 1972, period. The higher-energy portion of the spectra is further defined by simultaneous measurements obtained from the polar-orbiting satellite S72-1 (1972-076B). A turnover in the spectra below ~4 MeV is observed. The spectral shape is examined in terms of either (1) dE/dx losses in a chromospheric/coronal storage region or (2) adiabatic deceleration with an energy-dependent interplanetary diffusion coefficient (K). It is concluded that the data are consistent with dE/dx losses if the protons were stored at an altitude of ?3 Rs. We also examined the possibility of adiabatic deceleration in the solar wind. An order of magnitude calculation indicates that K (10 MeV) ~7.5¿1021 cm2/s, a value too high for diffusion-convection to be a viable explanation for the observed spectral shape.

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Journal of Geophysical Research
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