An improved approach to calibrating high magnetic field gradients for pulsed field gradient experiments.
Probes capable of generating short high intensity pulsed magnetic field gradients are commonly used in diffusion studies of systems with very short T(2). Traditional methods of calibrating magnetic field gradients present unique challenges at ultrahigh field strengths and are often inapplicable. Currently the most accurate method of determining magnetic gradient strength is to use the known diffusion coefficient of a standard sample and determine gradient strength from the echo attenuation plot of a diffusion experiment, however, there are problems with finding suitable standards for high intensity gradients. Here, we show that molecules containing at least two receptive nuclei (i.e. one with high and one with low gyromagnetic ratios) are excellent systems for calibrating high intensity gradients.
Nanoscale Organisation and Dynamics Group, College of Health and Science, University of Western Sydney, Locked Bag 1797, Penrith South DC, NSW 1797, Australia.
Nirbhay N
NN
Yadav
Allan M
AM
Torres
William S
WS
Price
D000465:Algorithms; D001315:Australia; D002138:Calibration; D009682:Magnetic Resonance Spectroscopy / Q000295:instrumentation* / Q000592:standards*; D008280:Magnetics / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013113:Spin Labels
D013113:Spin Labels