Relativistic semiclassical theory of the Coulomb excitation of atoms

Journal Article · Wed Sep 01 00:00:00 EDT 1982 · Sov. Phys. - JETP (Engl. Transl.); (United States)

OSTI ID:5757869

Yudin, G L

The processes of Coulomb excitation and ionization of atoms by fast charged particles moving along classical trajectories are considered. The target electrons are described by the Dirac equation and the field of the incoming particle is described by the Lienard-Wiechert potential. The theory is formulated in a form most convenient for the description of all the characteristics of semiclassical atomic collisions. Analytic expressions are obtained in the cases of small and large momentum transfers for K-shell ionization cross sections and for the probabilities and cross sections for the 1S/sub 1/2/..-->..2S/sub 1/2/, 1S/sub 1/2/..-->..2P/sub 1/2/, and 2S/sub 1/2/..-->..2P/sub 1/2/ transitions in a heavy hydrogen-like atom. The stimulated multiphoton emission and absorption processes that occur in inelastic scattering of relativistic electrons by light atoms in an external electromagnetic field are considered. Universal relations are derived in the low-frequency approximation for the total cross section for stimulated absorption in all the inelastic channels.

• OSTI ID: 5757869
• Journal Information: Sov. Phys. - JETP (Engl. Transl.); (United States), Journal Name: Sov. Phys. - JETP (Engl. Transl.); (United States) Vol. 56:3; ISSN SPHJA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
COLLISIONS
COULOMB EXCITATION
COULOMB IONIZATION
CROSS SECTIONS
DIFFERENTIAL EQUATIONS
DIRAC EQUATION
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ENERGY-LEVEL TRANSITIONS
EQUATIONS
EXCITATION
INELASTIC SCATTERING
IONIZATION
MOMENTUM TRANSFER
MULTI-PHOTON PROCESSES
PARTIAL DIFFERENTIAL EQUATIONS
SCATTERING
SEMICLASSICAL APPROXIMATION
WAVE EQUATIONS