Scattering of Electron and Photon from Excited Metastable He (23S) Atoms and Study of Energy Variation of Inelastic TCS

Scattering cross sections may be defined as in nuclear, atomic and particle physics for collisions of one type of particle with targets; either stationary or moving. The probability for any given reaction to occur is in proportion to its cross section. Thus to find the cross section for a given reaction is a proxy for stating the probability that a given scattering process will occur. The total cross section (TCS) is among the most important measurable quantities and it can reveal a great amount of information about the internal structure of target particle. Exotic He (23S) atoms have been considered as a target for theoretical study of electrons as well as photon scattering under various approximate conditions. Evaluation of TCS (total cross section) for electron scattering by these atoms at low and intermediate energies. Results show that good compatibility and analogy with limited experimental data available. For the photon scattering, from this target the isotropic Atomic Compton Profiles J(Q) have also been calculated. For this scattering enough comparable data are not existed in literature.