Abstract
Isotopic production cross sections were measured for proton- and deuteron-induced reactions on 93 Nb by means of the inverse kinematics method at RIKEN Radioactive Isotope Beam Factory. The measured production cross sections of residual nuclei in the reaction 93 Nb + p at 113 MeV/u were compared with previous data measured by the conventional activation method in the proton energy range between 46 and 249 MeV. The present inverse kinematics data of four reaction products (90 Mo, 90 Nb, 88 Y, and 86 Y) were in good agreement with the data of activation measurement. Also, the model calculations with PHITS describing the intra-nuclear cascade and evaporation processes generally well reproduced the measured isotopic production cross sections.
Highlights
RIKEN Radioactive Isotope Beam Factory (RIBF) [3]
The measured production cross sections are compared with model calculations using by Particle and Heavy-Ion Transport code System (PHITS) [5] describing the intra-nuclear cascade and evaporation processes in order to investigate the applicability of the reaction models to the prediction of isotopic production cross sections of residual nuclei in proton- and deuteroninduced reactions
The data are slightly below the interpolated curves in the cases of 90Mo and 88Y, the curves are within statistical and systematic errors. This result indicates that the experimental data by the inverse kinematics method are consistent with those by the activation method
Summary
Using the inverse kinematics method, one can measure production yields of residual nuclei over a wide range of atomic and mass numbers including stable nuclei, while the production yields of stable isotopes cannot be measured in principle by conventional activation methods. To confirm the consistency between the two methods, a measurement of proton and deuteron induced production cross sections on stable nucleus 93Nb was performed using the same inverse kinematics method as in Refs. Niobium-93 was chosen because the experimental data of activation cross sections for proton-induced reactions on 93Nb are available over a wide range of incident energy [4]. The isotopic production cross sections for the reactions induced by 93Nb projectiles on proton and deuteron at 113 MeV/u are derived and. The measured production cross sections are compared with model calculations using by Particle and Heavy-Ion Transport code System (PHITS) [5] describing the intra-nuclear cascade and evaporation processes in order to investigate the applicability of the reaction models to the prediction of isotopic production cross sections of residual nuclei in proton- and deuteroninduced reactions
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