One-pulse nutation NMR
applied to a powder:
JDK1.1.8 applet

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AIM: Determination of the quadrupole coupling constant from a featureless NMR lineshape

Launch the one-pulse applet with Java Web Start.

One-pulse sequence with pulse length p1 for nutation NMR

The one-pulse sequence is the simplest NMR experiment. As for a single crystal, the central-line intensity of a powder is independent of the quadrupole coupling constant and is proportional to the pulse length p1, if the latter is short. As a result, this excitation condition of quadrupole spins allows us to quantify the number of spins in the powder. However, the acquisition delay or the "dead time" of the NMR probe head modifies the line intensity.

IMAGE: Parameters for the simulation of one-pulse nutation NMR line intensity

The left part of the simulation panel indicates the physical parameters. It is preset for a typical experiment on a spin I = 3/2 in a powder. You can introduce your own values.

MinLength: the first value of p1 in µs

MaxLength: the last value of p1 in µs

Step: the increment of p1 in µs

The following applet is initialized for the central-line intensity of a spin I = 3/2 in a powder excited by the one-pulse sequence. The experimental line intensities are 1/10 of the simulated ones.

Help for selecting all the simulated data of the line intensity text area in a JDK1.1.8 applet.

Solid-state NMR bibliography for:

Aluminum-27
Antimony-121/123
Arsenic-75
Barium-135/137
Beryllium-9
Bismuth-209
Boron-11
Bromine-79/81
Calcium-43
Cesium-133
Chlorine-35/37
Chromium-53
Cobalt-59
Copper-63/65
Deuterium-2
Gallium-69/71
Germanium-73
Gold-197
Hafnium-177/179
Indium-113/115
Iodine-127
Iridium-191/193
Krypton-83
Lanthanum-139
Lithium-7
Magnesium-25
Manganese-55
Mercury-201
Molybdenum-95/97
Neon-21
Nickel-61
Niobium-93
Nitrogen-14
Osmium-189
Oxygen-17
Palladium-105
Potassium-39/41
Rhenium-185/187
Rubidium-85/87
Ruthenium-99/101
Scandium-45
Sodium-23
Strontium-87
Sulfur-33
Tantalum-181
Titanium-47/49
Vanadium-51
Xenon-131
Zinc-67
Zirconium-91
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