Inspico High Resolution Analysis
Dedicated Instruments:  Field Ion Microscopy & Atom Probe Tomography

Mass Tab - Peak Identification

Clicking the Identify Peaks button will open the Peak Identifier window.

On the left side there are several option for choosing how to calculate the peaks. This feature gives suggestion for what different peaks can be. The suggestion at the moment are only possible for elements and not molecules.

Minimum and maximum mass will cut the mass spectrum and search for peaks in the region specified.

Peak Threshold defines what is a peak. In order for a point to be considered a peak its count should be higher than this threshold.

The Peak Width can be considered as an error margin. Since peak might be slightly shifted from their textbook position (due to calculation or correction errors), increasing this value helps get more suggestion even if the peak is not in the correct position. Lowering this value will give you less but more accurate suggestions.

Clicking the Find Peaks button a list of peaks (their poistion and height), what are they currently defined as according to your existing alloy definition and a suggestion list will be displayed. Selecting one of them on the table will display a zoomed in mass spectrum on the right side with all the isotopes as weighted bars. The height of the bars shows the abundance levels of the different isotopes.

The possible suggestion list contains a list and changing the selected suggestion will update the mass spectrum. The blue window in the mass spectrum can be modified using the same controls as the mass windows on the Mass page.

To move the border of the chart the following hidden controls can be used.

Left and Right keys will move the right border.

Up and Down keys will move the top border.

Holding down the Shift button while pressing the Left/Right or Up/Down key will move the Left and Down borders respectively.