• V M Burke

      Articles written in Pramana – Journal of Physics

    • Electron impact excitation of Ni XIX using theR-matrix method

      Man Mohan M Le Dourneuf A Hibbert V M Burke

      More Details Abstract Fulltext PDF

      Collision strengths for all the transitions between the 15 lowest states of neon-like Ni XIX have been calculated for electron impact in the 80–140 Ry energy range. Configuration-interaction wavefunctions have been used to represent the target states. The standardR-matrix code has been used to calculate the lower scattering partial waves (L≤9), while a no-exchange version of the same code has been used to compute efficiently the higher partial waves (L≥10). Effective collision strengths for 105 excitation transitions between the ground state 2s22p61Se and the 142s22p53l Rydberg states are tabulated for electron temperatures in the range logT=5.40 to logT=7.00, withT expressed in °K.

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