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- Author or Editor: I. Mahunka x
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Abstract
For improvement of radionuclidic purity of123I a method was elaborated to obtain highly enriched [123Te] tellurium. Using this new TeO2 target the optimum irradiation conditions have been investigated for the production of123I via123Te (p,n)123I and the radionuclide impurity levels were also determined.
Abstract
An improved method has been developed to obtain highly enriched [123Te] tellurium for the production of medically important123I. Excitation function of the123Te(p,n)123I reaction, production yields and radionuclidic impurity levels were determined as a function of bombarding energy and target thickness.
Abstract
Normal motor-oil was investigated by CPAA method using 12 and 18 MeV proton beams, which were extracted to the air. The samples were taken from the oil carter of a motor after different running times. The change of the amount of certain trace elements was detected with increasing time of use. By using this method the friction wear of the engine material can also be measured.
Abstract
Excitation functions of proton induced reactions on Pd are important for medical radioisotope production, for activation analysis, for development of low activation materials and other purposes. No experimental data exist in the literature for low and medium energy range protons. A detailed study of the excitation functions was performed up to 80 MeV proton energy by using the stacked foil irradiation technique and gamma-ray spectrometry. The irradiations were carried out at the external beam lines of the AVF cyclotron at the Tohoku University. Japan (80 and 70 MeV) and the CGR 560 cyclotron at the Vrije Universiteit Brussels (38, 29 and 17 MeV). The beam intensity, the incident energy and the energy degradation were controlled by a method based on flux constancy via normalization to the parallel measured excitation functions of natAl(p,x)22,24Na and natCu(p,x)56,58Co, 62,65Zn monitor reactions. Excitation functions for direct and cumulative cross sections have been measured for the production of 105mg,106m,110mAg, 101Pd, 101mRh and 97Ru radionuclei. Calculations for the excitation functions using the Alice-IPPE code were performed with a view to estimate the weight of the different contributing reactions and to check the trend and the magnitude of the obtained experimental data.
