Happy New Year all, I am wondering if anyone has done any scripting or
setup for measuring (then compensating for) nonlinearity of the pulsed
gradient field produced by the gradient coil on a Bruker instrument. The
method was described here:
https://doi.org/10.1016/j.jmr.2009.01.025
and nicely implemented in VnmrJ/OpenVnmrJ as a single mouse click experiment,
with 5 coefficients for a power series written into the probe file. It
works really well! Mestrenova reads and uses those coefficients if they are
in a DOSY data set.
As far as I know, Bruker has not implemented this method in Topspin
(although I'd be happy to find out I'm wrong about that). Assuming that is
correct, has anyone scripted an implementation themselves? Barring that,
has anyone done a one off measurement on their Bruker probe and calculated
their own coefficients? I'd be very curious to know what values were
obtained and what probe type was used. (My experience with the Varian side
of it was that the probe type and vintage, and presumably the hardware
design of the gradient coil, mattered quite a bit.)
--
Dave VanderVelde
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Received on Mon Jan 05 2026 - 09:10:17 MST