Abstract
Improved values of the proton impact excitation cross sections at coronal energies for all the Fe+12 ground configuration (3s23p2) transitions are presented. These were obtained by direct computer integration of the Schroedinger equation (with the states expressed in intermediate coupling) resulting from the semi-classical Coulomb excitation theory formulation of the process. Comparison is made with previous results. The associated rate constants at coronal temperatures are given and compared with the corresponding electron impact excitation rate constants. Some cross-section values for the Fe+13 3s23p2P1/2→2P3/2 excitation are also presented.
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