Stevenson, Mark AndrewCrowe, Albert2008-06-202008-06-202004Journal of Physics B: Atomic, Molecular and Optical Physics, 2004; 37(12):2493-25000953-4075http://hdl.handle.net/2440/45509Copyright © 2004 Institute of Physics and IOP Publishing LimitedExcitation–ionization of the calcium atom by electron impactJournal article00200777822008062016300910.1088/0953-4075/37/12/0050002228304000082-s2.0-3042726458