“…Moreover, it has been experimentally tested at Stanford University [ 29 , 30 ], ETH, Zürich [ 31 , 32 ], Technical University and Darmstadt [ 33 ]; currently, such extraction RF-only funnels are components of the facilities being developed at the Notre Dame University [ 34 , 35 ], McGill University, Montreal [ 36 ] and GSI, Darmstadt [ 37 ].…”