quadrupole, FLF2QT32. 1st-order transfer matrix elements at the focal planes in the LEB. Matrix element FLF1 FLF2 (x,x) 3.67 -2.00 (x,a) (x,d) -5.57 (a,a) 0.27 -0.50 (a,d) (y,y) 1.49 -2.01 (y,b) 0.14 -0 [...] isotopes. The ion-optics up to FMF3 are similar to the High-Energy Branch. The table below gives the 1 st -order transfer matrix elements at the focal planes in the Low-Energy Branch of the Main-Separator