NUCLEAR ISOMERS^{90m, g}Zr,^{89m, g}Zr,^{89m, g}YAND^{85m, g}SrFORMED BY BOMBARDMENT OF⁸⁹YWITH PROTONS OF ENERGIES FROM 4 TO 40MeV

Abstract

Excitation functions for the reactions 89 Y (p, n)89g Zr and 89 Y (p, n)89m Zr have been measured over the energy ranges from threshold to 15 MeV using stacked foil activation technique. The isomeric cross-section ratio σm/(σm+σg) for the formation of 89m, g Zr was determined. The excitation functions and isomeric cross-section ratios were calculated for the reactions 89 Y (p, γ)90m, g Zr , 89 Y (p, n)89m, g Zr , 89 Y (p, p)89m, g Y and 89 Y (p, αn)85m, g Sr also for energy range 4–40 MeV . The PE emission fraction is found to depend strongly on the energy of the incident particle. The isomeric cross-section ratio is found to depend strongly on the relative spins of the isomeric and ground state and some dependence on energy difference between the levels.

Recommended nuclear data for medical radioisotope production: diagnostic positron emitters

“…107 Five experimental datasets for the 85 Rb(α,3n) 86 Y reaction available in the literature [36,[237][238][239][240], and TENDL calculations Rb(α,3n) 86 Y reactions Fig. 110 Sixteen experimental datasets for the 89 Y(p,n) 89 Zr reaction available in the literature [36,56,82,110,234,[241][242][243][244][245][246][247][248][249][250][251], and TENDL calculations Production of 89 Zr (T 1/2 = 78.41 h)…”

“…The sixteen experimental datasets available in the literature are shown in Fig. 110 [36,56,82,110,234,[241][242][243][244][245][246][247][248][249][250][251] together with the TENDL calculations. Five datasets were rejected (Birattari et al [244] (energy shift), Blosser and Handley [56] (value too high), Satheesh et al [250] (energy shift), Delaunay-Olkowsky et al [234] (value too low), and Saha et al [242] (values too high)), and the remaining eleven datasets were used in the statistical fitting procedure.…”

Medical Cyclotron Solid Target Preparation by Ultrathick Film Magnetron Sputtering Deposition

“…Instead, it was predicted by means of the Radionuclide Yield Calculator (RYC) 2.0 software [39] containing SRIM (The Stopping and Range of Ions in Matter [40]) modules. The experimental nuclear cross-section data, presented in Experimental Nuclear Reaction Data (EXFOR [41]) and previously reported by Omara et al [42], Satheesh et al [43], and Zhao et al [44] fit by Gaussian generalized distribution (GGD), were utilized for the calculations. In order to validate the calculations obtained using the RYC 2.0 software, the A theor (this work) was compared to the data presented in the literature A theor (Lit.…”