Info
109 1010 10" 10« Huence (Particle • cm"2)
Fig. 8-12. • A Plot of the Probabilities of Exceeding Given Fluence Levels for Satellite Mission Durations of 1, 2, 3, 5, and 7 Years. The plot represents protons with energies above 10 MeV. These values pertain to satellite missions near the solar activity maxima [Feynman et al., 1988].
Fig. 8-12. • A Plot of the Probabilities of Exceeding Given Fluence Levels for Satellite Mission Durations of 1, 2, 3, 5, and 7 Years. The plot represents protons with energies above 10 MeV. These values pertain to satellite missions near the solar activity maxima [Feynman et al., 1988].

Energy (QeVMudeon)
Fig. 8-13. Energy Spectra for Several Elements of Galactic Cosmic Rays. The energy for hydrogen has been multiplied by a factor of 5 to distinguish It from the helium curve.
Energy (QeVMudeon)
Fig. 8-13. Energy Spectra for Several Elements of Galactic Cosmic Rays. The energy for hydrogen has been multiplied by a factor of 5 to distinguish It from the helium curve.
Cosmic rays pose a serious hazard because a single particle can cause a malfunction in common electronic components such as random access memory, microprocessors, and hexfet power transistors. When a single passing particle causes this malfunction, we call radiation effects single-event phenomena, or SEP.
A galactic cosmic ray loses energy mainly by ionization. This energy loss depends chiefly on the square of the particle's charge, Z, and can be increased if the particle
100 so
Post a comment