JOURNAL OF PLASMA PHYSICS, v. 67, issue. 2-3, page. 175-182
Abstract
Inelastic Compton scattering of photons by hydrogenic ions in a classical
nonideal plasma is investigated. An effective pseudopotential model taking into
account plasma screening and collective effects is applied to describe the interaction
potential in a nonideal plasma. The screened atomic wave functions and energy
eigenvalues for the ground and excited states of the hydrogenic ion in a classical
nonideal plasma obtained by the Ritz variational and perturbational methods. The
expression for the lowest-order transition matrix element is obtained by a twophoton
process associated with terms quadratic in the vector potential A.
The inelastic Compton scattering cross-section horn the 1s ground state to the 2p excited
state is obtained as a function of the incident photon energy, Debye length, and
the non-ideality plasma parameter. It is found that the collective effect reduces the
cross-section. The collective effect on the cross-section is decreased with increasing
Debye length.