ABSTRACT
(99)Mo photonuclear yield was measured using high-energy electrons from Laser Plasma Accelerators and natural molybdenum. Spectroscopically resolved electron beams allow comparisons to Monte Carlo calculations using known (100)Mo(γ,n)(99)Mo cross sections. Yields are consistent with published low-energy data, and higher energy data are well predicted from the calculations. The measured yield is (15±2)×10(-5) atoms/electron (0.92±0.11 GBq/µA) for 25 mm targets at 33.7 MeV, rising to (1391±20)×10(-5) atoms/electron (87±2 GBq/µA) for 54 mm/ 1.7 GeV, with peak power-normalized yield at 150 MeV.
Subject(s)
Molybdenum/radiation effects , Radiopharmaceuticals/isolation & purification , Technetium/isolation & purification , Copper/radiation effects , Copper Radioisotopes/radiation effects , Drug Contamination , Electrons , Gamma Rays , Humans , Isotopes/radiation effects , Monte Carlo Method , Niobium/isolation & purification , Radioisotopes/isolation & purificationABSTRACT
Cross section data for formation of the medically important radionuclide (61)Cu (T½=3.33h) in proton and deuteron induced reactions on enriched (64)Zn and in (3)He- and α-particle induced reactions on (59)Co were analyzed by using the nuclear model calculational codes, EMPIRE and TALYS. A well-defined statistical procedure was then employed to derive the recommended excitation functions, and therefrom to obtain integral yields. A comparison of major production routes of (61)Cu was done.
Subject(s)
Cobalt Isotopes/chemistry , Copper Radioisotopes/chemistry , Deuterium/chemistry , Helium/chemistry , Isotope Labeling/methods , Models, Chemical , Zinc Isotopes/chemistry , Cobalt Isotopes/radiation effects , Computer Simulation , Copper Radioisotopes/isolation & purification , Copper Radioisotopes/radiation effects , Deuterium/radiation effects , Helium/radiation effects , Isotopes/chemistry , Isotopes/radiation effects , Protons , Radiation Dosage , Zinc Isotopes/radiation effectsABSTRACT
The consistency of the published values for fission averaged cross-sections of threshold reactions induced in a nuclear reactor is analyzed. The influence of the literature data involved in the determination of these cross-sections is discussed. Renormalizations based on cross-sections value for the standard reactions, isotopic abundances of the precursors and radiation emission probabilities of the radionuclide under study and the monitor, are applied to the evaluation of the cross-sections for the reactions: (46)Ti(n,p)(46)Sc; (47)Ti(n,p)(47)Sc; (48)Ti(n,p)(48)Sc; and (64)Zn(n,p)(64)Cu.