Adiabatic pulses for wideband inversion and broadband decoupling

摘要

An inversion pulse for wideband application is obtained from a simple nonlinear amplitude modulation wherein the amplitude is modulated in accord with A(t)=A.sub.0 {1-| sin &bgr;t|.sup.n } and the entire pulse is frequency modulated such that the phase varies as . phi.(t)=&phgr;.sub.0 +1/2 kt.sup.2.