SEARCH Articles Figures Tables Charged Particle in a Quadrupole Field Electric field gradient quadrupole interaction Electric field gradient tensors nuclear quadrupole coupling constant Electric-quadrupole field-gradient Electrical field gradient interaction quadrupole-inner Electromagnetic Fields Linear Ion-Trap Quadrupole (LTQ) Analyzers Electromagnetic Fields Quadrupole (Q) Analyzers Fringing fields (quadrupole mass Quadrupole Contribution and Field-Induced Symmetry Breaking Quadrupole electric field Quadrupole field gradient interactions Quadrupole field split Quadrupole-inner electrical field Supplemental fields, quadrupole The quadrupole interaction and electric field gradients Three-dimensional quadrupole field