R.K. Nesbet
Physical Review B
Variational calculations locate and identify resonances and new threshold structures in electron impact excitation of He metastable states, in the region of the 33S and 31S excitation thresholds. A virtual state is found at the 33S threshold.
R.K. Nesbet
Physical Review B
L.D. Thomas, R.K. Nesbet
Physical Review A
R.K. Nesbet
Physical Review A - AMO
R. Colle, R.K. Nesbet
Journal of Physics B