This plug-in shifts (wobbles) the spectrum on the detector during the SI data acquisition. The spectrum will be accumulated after adjusting the spectrum shift to reduce the channel gain/dark current variation.
None.Download: Spectrum Wobbler plug-in
1) Copy the files to DM Plug-Ins folder, and then launch the DM again.
The Spectrum Wobbler will appear in the sub menu of Floating Windows under Window menu.
2) Select the Spectrum Wobbler from the Floating Windows sub menu to open the tool palette.
3) Start the Spectrum Wobbler before acquiring an SI data, and stop the Wobbler after data acquisition.
4) The obtained spectrum should be adjusted by yourself using cross-correlation of the spectrum feature or the zero-loss shift of the low-loss spectrum in the case of DualEELS.
Step: a small fraction of channel energy width (dispersion)
(e.g. 0.2 x channel energy width)
Interval: close to an exposure time of the spectrum
Range: close to (channel energy width) x (number of channels to be averaged)
(e.g. channel energy width x 50)
Step = 0.05 eV for the channel energy width (dispersion) of 0.25 eV/channel (0.25 x 0.2)
Reference(s) to be cited:Spectrum Wobbler plug-in provided by HREM Research Inc. and freely downloaded at www.hremresearch.com