Open AccessFine-structure-resolved electron collisions from chlorine atoms in the( 3 p 5 ) 2 P 3 / 2 o
Author(s) -
Yang Wang,
Oleg Zatsarinny,
Klaus Bartschat,
JeanPaul Booth
Publication year - 2013
Publication title -
physical review. a, atomic, molecular, and optical physics/physical review, a, atomic, molecular, and optical physics
Language(s) - English
Resource type - Journals
eISSN - 1094-1622
pISSN - 1050-2947
DOI - 10.1103/physreva.87.022703
Subject(s) - physics , polarizability , atomic physics , degenerate energy levels , electron , electron scattering , scattering , chlorine , ion , quantum mechanics , chemistry , molecule , organic chemistry
International audienceThe B-spline R-matrix method is employed to calculate elastic electron scattering from chlorine atoms in the (3p5)2P3/2,1/2o states and electron-induced collisions between these two finestructure levels. The polarizability of the target states is accounted for by including polarized pseudostates in the close-coupling expansion, while relativistic effects are treated at the level of the semirelativistic Breit-Pauli approximation. We find the Ramsauer minimum in the elastic channels at a significantly lower projectile energy (≈0.2 eV) than previous calculations, due to an apparent strong sensitivity of the theoretical predictions on the details of the model, especially the target structure. The present results are relevant to the determination of chlorine atomic densities in Cl2-containing industrial plasma etch reactors