Two-proton knockout from Mg-32: Intruder amplitudes in Ne-30 and implications for the binding of F-29,F-31

γ-ray decays from excited states in 30 Ne and inclusive and exclusive cross sections were measured in the 9 Be( 32 Mg, 30 Ne + γ)X two-proton knockout reaction at incident beam energies of 99.7 and 86.7 MeV/nucleon. The measured cross section is suppressed compared to calculations and is indicative of a reduced overlap of initial and final state wave functions in 32 Mg and 30 Ne. We interpret this reduction as due to large 4p4h amplitudes present in the 30 Ne ground state wave function, but not 32 Mg. Such large intruder components are predicted to help stabilize the heavier fluorine isotopes against neutron emission.