The stage of ionization that usually produces more ions is the complete ionization stage. This is when all of the atoms or molecules in a substance have been ionized, resulting in a high concentration of ions.

the ionization chamber ionizes atoms into ions in the in the mass spectrometer

Fractional ionization occurs when part of a cell loses ions due to collision of molecules. If the ions in the cell turn from positive to negative, but only part of them turn, this is called fractional ionization.

i think its ionization

ionization energy