SEARCH Articles Figures Tables Analyzer quadrupole Axial ejection Ejection Ion trap Ion trap mass analyzer Ion trapping Ion-quadrupole Linear analyzers Linear ion traps Linear quadrupole analyzer Linear quadrupole ion trap Linear trap quadrupole mass Linear-trap quadrupole Mass analyzer Mass analyzer quadrupole Mass analyzers ion-trapping Mass analyzers quadrupole ion trap Mass quadrupole Mass trapping Quadrupole ion trap Quadrupole ion trap analyzer Quadrupole linear Quadrupole mass analyze Quadrupole trap Trapped ions Trapping analyzers Trapping quadrupole