Cross sections for electron scattering from the ground state of mercury

Abstract

We have performed close-coupling calculations of electron scattering from the ground state of mercury atoms in the 4–500 eV energy range. Total scattering cross section and differential and integrated cross sections for elastic scattering and excitations of the 6s6p 1P1, 6s6p 3P0,1,2, 6s7p 1P1, 6s7s 1S0 and 6s7s 3S1 states are presented. Comparison with available experimental and theoretical results is presented. Good agreement with experimental differential cross sections in both shape and absolute values was found for most of the transitions.

Relativistic calculations for spin-polarization of elastic electron—mercury scattering

“…Many earlier investigations on the e − -Hg scattering can be traced in the review articles [3,16]. Among the recent studies, the experimental works of Dümmler et al [17], Kaussen et al [18], Berger and Kessler [19], Möllenkamp et al [20], Hanne et al [21]; theoretical calculations due to Bostock et al [22], Kelemen and Remeta [5], Zatsarinny and Bartschat [23], Fursa et al [24], Fritsche et al [25], Haberland and Fritsche [26], McEachran and Stauffer [27] and Hasenburg et al [28]; and review work of Walker [2] are worth mentioning. In particular, Kelemen and Remeta [5], using relativistic optical potential (OP) approximation, reported the e − -Hg elastic scattering results for 0.…”

Direct evidence for channel-coupling effects in molecules: electron impact excitation of the a″1Σ+gstate of N2

“…Theoretical data for electron impact excitation of the 6 1 S → 7 1 S and 6 1 P → 7 1 P transitions of Ba [6] and 6 1 S → 7 1 S excitation of Hg [7,31] also display similar behaviour. In figure 3, we note that the depth and width of the minimum depend on the angular resolution of the experiment.…”

Relativistic convergent close-coupling calculation of inelastic scattering of electrons from cesium

“…For the valence electron, a set of one-electron orbitals is obtained by diagonalization of the Cs quasi one-electron Dirac-Coulomb Hamiltonian in a relativistic (Sturmian) L-spinor basis [14] with an exponential falloff λ = 3.0. A phenomenological one-electron polarization potential was used to improve the accuracy of the calculated cesium wave functions [15,16]; this allows us to take into account more accurately the effect of closed inert shells on the active electron. The polarized-orbital method of McEachran et al [17] was used to produce the polarization potential from the core orbitals.…”