Production of 52Fe via proton-induced reactions on manganese and nickel

The Production of 52Fe by Means of a Medium Energy Proton Accelerator

“…The shapes of the curves are generally as expected considering the Q values for the numerous reactions possible in this energy region. The agreement with the only other data set by Steyn et al [30] is fairly good except for the reported levels of directly produced ^^Fe, which they report as being about twice as high as the present work, but this could possibly be due to their chemical Separation technique which, in practice, results in a very poor decontamination factor for cobalt and Vanadium. Figure 2 shows the yields of ^^Fe measured in this study and three others.…”

“…As in the previous figure the production rates of Tanaka et al [17] were derived from cross section measurements on as were those of Michel et al [18] except that they used 45 MeV protons on "®'Ni. Also the data given by Dmitriev [31] is derived from thick target data (2 MeV windows) as is that of Steyn et al [30]. In general the agreement is quite good (except for Tanaka et al [17]) if one considers the effect of proton straggling for the higher energy degradation produced in the larger foil stacks.…”

“…Production rates obtained from the work of Tanaka et al [17] and Dmitriev [31] come from cross section measurements and thick target yields (1 MeV window) for the reaction of 56 and 60 MeV protons with enriched These two works can be directly compared to our work because the contribution from ®°Ni can be considered to be negligible in comparison. Data obtained from Steyn et al [30] however relates to tabulated production rates for 100 MeV and 66 MeV protons on "^'Ni. The Figure 3 shows the comparison of our data with four other data sets for the indirect production of ^^Fe via decay of ^^Co.…”

Definitions of radioisotope thick target yields

“…Table 1 lists the four yields defined above with their notations in [25-5 An alternative term "thick target production rate" used by G. F. Steyn, S. J. Mills et al [11] clearly indicates that the quantity phys is time derivative (rate) of the time dependent yield. Figure 1 for the 18 O(p,n)…”

“…Newly measured excitation functions for charged-particle induced reactions are often reported with the thick target yields obtained by integration of the excitation functions, and compared with directly measured ones in the literature (e. g., [2,3]). There are also a few experimental works where the thick target yields and excitation functions were measured in parallel (e. g., [8,[11][12][13][14]). …”