Quantitative Determination of the Adiabatic Condition Using Force-Detected Nuclear Magnetic Resonance
Abstract
The adiabatic condition governing cyclic adiabatic inversion of proton spins in a micron-sized ammonium chloride crystal was studied using room temperature nuclear magnetic resonance force microscopy. A systematic degradation of signal-to-noise was observed as the adiabatic condition became violated. A theory of adiabatic following applicable to cyclic adiabatic inversion is reviewed and implemented to quantitatively determine an adiabaticity threshold (γ H1)2/(ωosc) = 6.0 from our experimental results.
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