*Institute for Problems in Mechanics, Russian Academy of Sciences*

* 101-1 ,Vernadskii Ave., Moscow, 119526, Russia*

* email: rylov@ipmnet.ru*

Web site: http://rsfq1.physics.sunysb.edu/~rylov/yrylov.htm

or mirror Web site: http://195.208.200.111/~rylov/yrylov.htm

Classical model **S***_dc* of Dirac particle S_D is constructed. S_D is the dynamic system described by the Dirac equation. Its classical analog **S***_dc* is described by a system of ordinary differential equations, containing the quantum constant *h* as a parameter. Dynamic equations for **S***_dc* are determined by the Dirac equation uniquely. Both dynamic systems S_D and **S***_dc* appear to be nonrelativistic. One succeeded in transforming nonrelativistic dynamic system **S***_dc* into relativistic one **S***_dcr*. The dynamic system **S***_dcr* appears to be a two-particle structure (special case of a relativistic rotator). It explains freely such properties of S_D as spin and magnetic moment, which are strange for pointlike structure. The rigidity function *f_r(a)*, describing rotational part of total mass as a function of the radius *a* of rotator, has been calculated for **S***_dcr*. For investigation of S_D and construction of **S***_dc* one uses new dynamic methods: dynamic quantization and dynamic disquantization. These relativistic pure dynamic procedures do not use principles of quantum mechanics (*QM*). They generalize and replace conventional quantization and transition to classical approximation. Totality of these methods forms the model conception of quantum phenomena (*MCQP*). Technique of *MCQP* is more subtle and effective, than conventional methods of *QM*. *MCQP* relates to conventional *QM*, much as the statistical physics relates to thermodynamics.

Text of the paper in Postscript in __English__ and in __Russian__.