Fast particles of natural or1g1n (cosmic rays) have been used for a long time as an important source of astrophysical and geophysical information. A study of cosmic ray spectra, time variations, abundances, gradients, and anisotropy provides a wealth of data on physical conditions in the regions of cosmic ray generation as well as in the media through which cosmic rays propagate. Astrophysical aspects of cosmic ray physics have been considered in a number of monograpqs. The most detailed seems to be "The Origin of Cosmic Rays" by V. L. Ginzburg and S. 1. Syrovatskij (1964) which is, however, concerned mainly with galactic cosmic rays. The physics of the circumsolar space is discussed in this book only rather briefly. Several other monographs have been devoted mostly to the physics of the interplanetary medium and cosmic rays in interplanetary space. These include the books by Dorman (1963, 1975a, b), Parker (1963), Dorman and Miroshnichenko (1968). The present monograph differs from the above mentioned books in two main aspects: (i) It presents a unified theoretical approach to analys{ng the properties of fast particles in interplanetary space, based upon consideration of cosmic rays as a highly energetic component of the interplane~ary plasma, which makes use of the plasma physics methods to describe the behaviour of cosmic rays.

Inhalt
I: Physical Properties of the Interplanetary Medium.- 1. The Solar Wind.- 2. Large-scale Interplanetary Magnetic Fields.- 3. Oscillations and Waves in Solar Wind Plasma.- 4. Shocks and Discontinuities in the Interplanetary Medium.- 5. Spectral Description of Stochastic Magnetic Fields.- II: Theory of Fast Particle Motion in Interplanetary Magnetic Fields.- 6. Qualitative Picture of Fast Particle Motion in Interplanetary Space.- 7. Kinetic Equation for Particles Moving in Magnetic Fields with Small-scale Inhomogeneities.- 8. Transport Equation.- 9. Scattering and Transport of Particles in Strong Magnetic Fields.- III: Propagation of Energetic Solar Particles.- 10. Basic Observational Data on Energetic Particles of Solar Origin.- 11. Anisotropic Propagation of Solar Cosmic Rays.- 12. Stationary Transport of Solar Cosmic Rays.- 13. Diffusion and Convection of Solar-flare Cosmic Rays.- IV: Particle Acceleration Processes in Interplanetary Space.- 14. Observational Data on Energy Variations of Cosmic Rays in Interplanetary Space.- 15. Particle Acceleration Due to Random Plasma Motions: Fermi Mechanism.- 16. Particle Acceleration by MHD Turbulence.- 17. Formation of Spectra of Accelerated Particles.- 18. Acceleration and Transport of Particles by MHD Shocks.- V: Modulation of Galactic Cosmic Rays.- 19. Basic Observational Data on Galactic Cosmic Rays.- 20. Theory of Galactic Cosmic Ray Modulation by Solar Wind Magnetic Field.- 21. Short-term Variations of Cosmic Ray Intensity.- Concluding Remarks.- I. The Green Function of the Stationary Transport Equation.- II. Solution to Non-stationary Transport Equation for a Constant Diffusion Coefficient.- III. Adiabatic Invariant of Charged Particle Crossing a Transverse Shock.- IV. Adiabatic Invariant of Charged Particle Crossing an Oblique Shock.