How to fit Spinning sidebands

 Example :  31P spectrum showing spinning sideband manifold / fit with the 'ssb' model  

Step 1 : Set up an isotropic line [see an example]

Step 2 : Create a new line and set the model to ss band

  1. Select a nucleus (mandatory for spinning sidebands) by Clicking the button or calling the [Spec Parameters] dialog.

  2. Click the [Add] button to add a new line

  3. Change the mode to ss band and give the band# and reference line#

  4. Click the [Drag] button to drag this spinning sideband to its right position (this will fix the spinning rate according to the band# and ref#).

  5. Check or modify the lines parameters in the [Fit Pannel] (bottom of screen)

  6. Press the [Compute] button to recompute the model spectrum

  7. Repeat this procedure for all the spinning sidebans that you expect.

Line Parameters (Bold parameters are selected for automatic optimization):
Amplitude : height of the maximum of the line
    Position : Position is computed from ref line according to band# and spinning rate
    Width : full width at half maximum of the line is given by the reference line
    xG/(1-x)L : Gaussian/Lorentzian ratio (1 for Gaussian, 0 for Lorentzian) is given by the reference line

You can always click use the Fit Paramters Pannel buttons

Step 2 : Optimizing the fit

  1. Check the different lines and their parameters (only Bold face parameters will be optimized)

  2. If necessary click the [Parameters] button to call the [Model Parameters full list] dialog and modify the list of variable paramters

  3. Click the [Optimize] button to optimize the current solution

Step 3 : Reporting and Saving

Fit parameters can be saved in machine readable binary format [Menu/Decomposition/Save Fit] or [Menu/Decomposition/Save as Fit] and thus retrieved later exactly in same state.

Parameters can be reported in human readable format by clicking the [Report] button to report the current line paramters in a dialog box from which you can Select/Copy and further Paste word processing or SpreadSheet programs.