Image Details
 
                    Caption: Figure 27.
Mass fraction profiles of the ten most abundant isotopes within the iron core at the onset of core collapse for the Mi = 15 ﹩{{\rm{M}}}_{\odot }﹩ model evolved with the 204 isotope network. The entire iron core is in NSE and the mass fractions adapt to the changing temperature, density and ﹩{Y}_{{\rm{e}}}﹩.
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