Solar particle events during the rising phase of solar cycle 22
Proceedings article published in 2009 by
T. E. Cayton,
R. C.; Cayton T. E.; Belian R. D.; Gary S. P.; Gisler G. R.; Reeves G. D.; Fritz T. A.; Christensen R. A. Reedy,
R. D. Belian,
S. P. Gary,
G. D. Reeves 
,
G. R. Gisler,
T. A. Fritz,
R. A. Christensen
,
G. R. Gisler,
T. A. Fritz,
R. A. Christensen
Abstract
The solar energetic particle events since early 1989 have been among the most intense and hardest in almost three decades. These particles were measured by several Los Alamos instruments on satellites in geosynchronous orbit. Proton fluxes and spectral slopes as measured by the CPA instrument are reported for 1989 and 1990. The composition of heavy (Z {approx} 6--28) energetic ({approx}2--50 MeV) ions as measured by the SOPA instrument is presented for the October 1989 event. 13 refs., 4 figs.