“…Fig. 5 compares the various cross-sections for direct reaction of 68 Zn(p,n) 68 Ga [ [24] , [25] , [26] , [27] , [28] , [29] , [30] , [31] , [32] , [33] , [34] , [35] , [36] , [37] ] with an overall uncertainty of 7.4 % in terms of incident proton energy. It indicates that the maximum probability of the reaction occurs between 10 and 14 MeV of proton energy for (p,n) reaction.…”