AIM: Determination of the quadrupole coupling from a featureless NMR lineshape
Launch the one-pulse applet with Java Web Start (Not available).
![One-pulse sequence with pulse length p1 for nutation NMR](one-nutation.gif)
The one-pulse sequence is the simplest NMR experiment. The corresponding one-dimensional nutation method allows us to determine the quadrupole coupling in a single crystal. Furthermore, for short pulse length p1, the central-line intensity is independent of the quadrupole coupling and proportional to p1. This excitation condition of quadrupole spins in a single crystal allows us to quantify the number of spins in the crystal. However the acquisition delay or the "dead time" of the NMR probe head modifies the line intensity.
![This is an image. The applet is located at the bottom of the page. IMAGE: Parameters for the simulation of one-pulse nutation NMR line intensity](nmr-panel.gif)
The left part of the simulation panel indicates the physical parameters. It is preset for a typical experiment on a spin I = 3/2. 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 single crystal excited by the one-pulse sequence. The experimental line intensities are identical to the simulated ones.
Help for selecting all the simulated data of the line intensity text area in a JDK1.1.8 applet.