Category Archive: examples

Jul 28

2D spectra

Simple2Dspectra

The attached code may be used for simple 2D simulations using SpinDynamica. It is not completely general but should do for many purposes. More general code will be included in SpinDynamica in future. This example has also been posted on the forum, where you may also post responses.               …

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Jan 16

Spin-3/2 spin dynamics

Dynamics of spin-3/2 state populations under a cosine-modulated rf pulse

This example file illustrates the spin dynamics of a spin-3/2 system in the presence of weak and strong rf fields. Selective manipulations of the central and satellite transitions are illustrated, including the use of cosine-modulated fields to excite the satellite transitions. Download here: SpinThreeHalfDynamics or here.  

Sep 19

Spectrum of 133Cs in an inhomogeneous gel

133Cs

The routine EnsembleAverage may be used to generate arbitrary distributions of nuclear spin interactions. In an example posted on the forum, I used EnsembleAverage to generate the spectrum of 133Cs (I=7/2) in an inhomogeneous gel. The same notebook includes a simulation of quadrupolar echoes in spin-7/2 with curious fractional timings.

Sep 19

Simulating chemical exchange in an AB spin system

At the present time, the case of spin systems experiencing chemical exchange cannot be handled entirely within the architecture of SpinDynamica. However, it is possible to build upon SpinDynamica to handle chemical exchange. I have posted an example file on the forum showing how to simulate an AB spin system of two spins-1/2 experiencing chemical …

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Apr 28

Ultrafast COSY

COSY spectrum in a single scan

A SpinDynamica demonstration of single-scan 2D spectroscopy using a spatial encoding of the spin interaction. Routines used: Signal1D, EnsembleAverage, ShapeFunction Programmed by Dr. Jean-Nicolas Dumez Attached File : ufcosy.nb

Mar 17

Visualization of Euler Angles

EulerVisualization

SpinDynamica code for the interactive visualization of Euler angles is available here: EulerVisualization

Feb 07

Composite Pulse Animation

CompositePulseAnimationFrame

A notebook for producing 3D animations of composite pulses is available here: https://www.dropbox.com/s/yam19kdjo8qtwva/CompositePulseAnimation.nb The plot shown is a single frame from one such animation.

Mar 28

Simultaneous precession and relaxation of a magnetization vector

RelaxationAndPrecession

    Download the code here: RelaxationAndPrecession.nb