Ball lightning as a source of neutrino and muons at its entry into a dense medium.

• The phenomenon of ball lightning anomalous penetration through thick metalic absorbing filters and appearance of a dark ball lightning has been investigated. • At the interaction of ball lightning with a dense medium a process of energy conversion of its own magnetic field into the kinetic energy of its charged particles occurs. • The phenomenon of anomalous passing of the ball lightning may be explained only by cascading generation of particles due to interaction of high-energy protons with absorbing filter, which causes the appearance of either negative muons and muon antineutrino or positive muons and muon neutrino. • The phenomenon of muons generation can be used to successfuly solve the problem of nuclear fusion. The phenomenon of ball lightning anomalous penetration through thick metalic absorbing filters and appearance of a dark ball lightning has been investigated. The ball lightning represents an extreme state of ionized matter in Nature. At the interaction of ball lightning with a dense medium a process of energy conversion of its own poloidal magnetic field into the kinetic energy of its charged particles occurs. The phenomenon of anomalous passage of a ball lightning within the standard model can be explained only by cascading generation of particles due to interaction of high-energy protons with an absorbing filter. The decay of pions leads either to the appearance of negative muons and muon antineutrino or positive muons and muon neutrino. This fact is confirmed by the absence of any particle imprints on the surface of this filter and the presence of a high potential of variable polarity in the region above the absorber after passing a ball lightning through it. This phenomenon of muons generation can be used to solve the problem of nuclear fusion. [ABSTRACT FROM AUTHOR]