Excitation functions of natZr+p nuclear processes up to 70MeV: New measurements and compilation

Abstract

Zr, the present experimental cross sections are likely the first to be reported for their formation in nat Zr+p.

The Beginning and Development of the Theranostic Approach in Nuclear Medicine, as Exemplified by the Radionuclide Pair 86Y and 90Y

“…Since then, many groups have repeatedly investigated this reaction for production, but no new cross-section measurement has been done. For the nat Rb( 3 He,xn) 86 Y reaction, also cross-sections were measured only once [ 15 ], but for the nat Zr(p,x) 86 Y reaction, a few new measurements have been reported over the last few years [ 17 , 18 , 19 , 20 ]. Very recently, cross-section data for a few reactions have been evaluated using rigorous nuclear model calculations, and recommended data have been presented [ 21 ].…”

“…Similarly, in the nat Zr(p,x) 86 Y process, the level of the 87 Y impurity formed via the 90 Zr(p,α) 87 Y reaction could be minimized if the incident protons have energies >25 MeV where the 90 Zr(p,αn) 86 Y reaction is favored. We therefore show the integral yields of 86 Y in Figure 2 also from those reactions, taking the data for the nat Rb( 3 He,xn) 86 Y process from [ 15 ] and those for the nat Zr(p,x) 86 Y process from [ 17 , 18 , 19 , 20 , 21 ]. It should be mentioned that in the case of the latter two reactions, the use of highly enriched 85 Rb and 9 0 Zr as targets would increase the 86 Y yield by about 25 and 100%, respectively, but it would not alter the radioactive impurity level to any significant extent, provided the energy ranges used in the targets are the same as given in Table 2 (see below).…”

“… Calculated yields of 86 Y in 86 Sr(p,n) 86 Y, 88 Sr(p,3n) 86 Y, nat Rb( 3 He,xn) 86 Y and nat Zr(p,x) 86 Y reactions (based on experimental and evaluated data given in [ 15 , 17 , 18 , 19 , 20 , 21 ]), plotted as a function of projectile energy. Note the different yield scales for the first two and the latter two reactions, respectively.…”

“…b Values calculated from the experimental data [ 15 ]. c Values calculated from the experimental data and model calculation [ 17 , 18 , 19 , 20 , 21 ]. d Experimentally-determined values [ 15 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 ].…”

Cross Sections for the \(^{nat}\)Zr\((p,xn)^{89,90}\)Nb Reactions Induced by 27.7 MeV Protons

“…So far, the cross sections of the nat Zr(p, xn) 89,90 Nb reactions were given by several authors, however there are some discrepancies among the reported data [1][2][3][4][5]. In addition, the 90 Nb is a positron emitting radioisotope that can be used for immune-PET scans [6,7]. The aim of this work was to measure the cross section of the nat Zr(p, xn) 89 Nb and nat Zr(p, xn) 90 Nb reactions with 27.7 MeV protons.…”