• Energy Research

This chapter is concerned with mechanical forces in magnetised systems and consequently with changes in magnetic field energy when mechanical movement occurs in the system.

There are two distinct but as it seems strongly connected problems. The first is the surprisingly rapid dissipation of magnetic fields which is observed in the Sun's atmosphere and must be supposed for some other objects as well. The second problem is the acceleration of fast particles in magnetized cosmical plasma.

Abstract Within quantum electrodynamics the electromagnetic fields have essential fluctuations which give rise to non-vanishing field energies in the neighbourhood of an atom or a molecule in its ground state. The magnetic field energy density as a function of the distance from the source is found using several model hamiltonians.

The general pattern of Weibel instability attributed to thermal anisotropic distribution in the electron component is obtained using the technique of discrete simulation of self-consistent radiationless plasma. The dependences of the initial medium anisotropy of the key instability parameters (the characteristic period and the maximum magnetic field energy) are investigated.