This is the deuterium deuterium fusion cross section (in cubic meters) at different ion collision energies (in 1000s of electron volts). It is taken from "Coupling of transit time instabilities in electrostatic confinement fusion devices" by Gruenwald and Fröhlich, Physics of Plasma, 2015 but is not an exact copy. ;Other information: This is the deuterium deuterium fusion cross section (in cubic meters) at different ion collision energies (in 1000s of electron volts). It is taken from "Coupling of transit time instabilities in electrostatic confinement fusion devices" by Gruenwald and Fröhlich, Physics of Plasma, 2015 but is not an exact copy.