When you tap and move the graph, the application header displays information about the radioactive isotope, whose energy corresponds to the cursor position:

The name of the isotope and its corresponding energy are displayed in square brackets, indicating the energy at the cursor line on the spectrum graph. The name of the decay chain for the isotope is shown below.

To view examples of spectra for common isotopes, tap here.

If the "Display gamma line position" option is enabled:

The pink line indicates the position of the isotope energy line. If the isotope has accompanying lines, they are displayed in turquoise (see the figure in the “Spectrum” topic). The dotted lines represent the X-ray lines.

If there are several isotopes with similar energies, information about the isotope whose energy line is closest to the cursor's energy value is displayed.

If the "Display gamma lines intensity" or "Draw markers on intensity lines" option is enabled, red lines or markers corresponding to the intensity of gamma radiation lines, relative to the activity of the parent nuclide, are drawn over or instead of the turquoise isotope lines.