yet another comment on Orsay: beam spot size

All the simulations below assume a 1-mm diameter beam spot. The width of the Q-value distributions is actually quite sensitive to beam spot size. I won't taunt you by showing plots of what the resolution would look like if the beam were on axis, but here's what the two states in ¹⁸O look like for a 2-mm diameter beam spot:



The widths of the peaks are now 63 keV instead of 51 keV for the 1 mm diameter beam spot, so worse but not catastrophic.