Procedure for correcting variational R-matrix calculations for polarization response - art. no. 034702

Using standard bound-state methodology, variational calculations of molecul ar R matrices can severely underestimate polarization response in the near- target region inside the R-matrix boundary. An "DeltaR" procedure is propos ed here as an easily implemented but significant improvement of such R matr ices. The efficacy of this procedure is demonstrated in calculations of dif ferential and integral cross sections for vibrationally elastic e-CO2 scatt ering at and below 1 eV.