A PROCEDURE FOR COMPUTING CHARACTERISTICS OF AN ELECTROMAGNETIC FIELD EXCITED BY AN INTENSE GAMMA BEAM IN AIR

G. G. Bliznуuk, A. V. Ivanоvsкy, A. A. Sоlоvуоv
VANT. Ser. Mat. Mod. Fiz. Proc 1991. Вып.2. С. 51-56.

      A mathematical formulation and a numerical method are described for computing electromagnetic field parameters in the vicinity of a strong gamma quantum beam moving through the air. The field characteristics are derived from a 1-D system of equations obtained with a running wave approximation. A system of ionization kinetics equations is solved to find a radiation-induced conduction in the medium. The sources, that is current density of charged particles produced by gamma quanta (electrons and positrons) and air ionization intensity are determined by solving equations with a self-consistent field and a collision integral in the Focker-Plank form. A numerical example is given.