[Question from NMRWiki Q&A forum] Switiching off the receiver during acquisition
Switiching off the receiver during acquisition
Hello nmr wikier. I use Bruker Avance I AQS 400. TopSpin Version 1.3
For a test I want to switch off the receiver during the acquisition. In pursuance of the pulse programming manual I can do that with the statement setrtp.
So I wrote following pulse programm (excerpt):
1 ze
2 30m
p1 ph1
3 DE1 DE2 DERX DEADC DEPA DE3
4 0.1u DWELL_GEN:f1
[Question from NMRWiki Q&A forum] T1 Recovery Law with matNMR
T1 Recovery Law with matNMR
Hi everybody,I can't figure out how to do this in matNMR: I've 32 echoes with different tao separating the pi/2 impulses. This 32 measurements shows an increasing peak which reach saturation.
I'd like to extract the value of T1 from my recovery law but I can't understand how to use the T1 fit option with this measurements.
ThanksPietro
nmrlearner
News from other NMR forums
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11-18-2010 06:16 PM
[U. of Ottawa NMR Facility Blog] Background Suppression in Liquids
Background Suppression in Liquids
High resolution NMR probes for liquids may contain parts near the coil consiting of the nuclei being observed. The parts give rise to background signals which can severely affect the NMR data. When observing11B, there is a background signal from boron containing parts near the coil and also the borosilicate glass in the NMR tube containing the sample.
Cory and Ritchey* introduced a very simple, clever method to suppress background signals in 1988. Their method uses a composite pulse, consisting of a 90° and two 180° pulses with appropriate phase...
nmrlearner
News from NMR blogs
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08-21-2010 08:15 PM
[U. of Ottawa NMR Facility Blog] Hahn Echo for 11B Background Suppression in Solids
Hahn Echo for 11B Background Suppression in Solids
Solids NMR probes often contain boron rich parts near the coil in which the sample resides. Boron nitride, in particular, is a material very commonly used. This can be very problematic if one wishes to collect 11B NMR data, in that a strong background signal may be observed. Even though these parts are not directly inside the coil with the sample, they do experience a small amount of rf from the coil and the coil does detect a 11B NMR signal from them. One simple way to avoid this problem is to use a Hahn echo to observe the 11B spectrum....
nmrlearner
News from NMR blogs
0
08-21-2010 08:15 PM
Solvent signal suppression in NMR
Solvent signal suppression in NMR
Publication year: 2010
Source: Progress in Nuclear Magnetic Resonance Spectroscopy, In Press, Accepted Manuscript, Available online 25 January 2010</br>
Gang, Zheng , William S., Price</br>
More...
Suppression of receiver recovery time in NMR
Linear Mode
