Study of photonuclear reactions with the alpha particles' emission on zirconium, niobium, and molybdenum
M V Zheltonozhskaya1, P D Remizov1, A P Chernyaev1
1Lomonosov Moscow State University, Russian Federation.
Abstract:
Photonuclear reactions with the emission of protons and alpha particles have been little studied experimentally since their cross-sections are much smaller than those of the (γ, n) channel due to the Coulomb barrier. However, the study of such reactions is of great applied interest to producing medical isotopes. Besides, experimental data on photonuclear reactions with the emission of charged particles for nuclei with Z = 40, 41, 42 open up great opportunities for learning the role of magic numbers. In the presented article, we obtained the weighted average yields of (γ, αn)-reactions for natural zirconium, niobium, and molybdenum at bremsstrahlung γ-quanta of 20 MeV boundary energy for the first time. A significant effect of a closed N = 50 shell was established on the reaction yield with the emission of alpha particles. Our research shows that the semi-direct mechanism for (γ, αn) reactions dominates in the energy range below the Coulomb barrier. As a result, we can note the prospects of applying (γ, αn)-reaction on 94Mo to produce the 89Zr promise medical radionuclide isotope using electron accelerators.
More Related Videos
08:54Synthesis and Exfoliation of Discotic Zirconium Phosphates to Obtain Colloidal Liquid Crystals
Published on: May 25, 2016
09:18Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident
Published on: December 14, 2017
Related Concept Videos
Types of Radioactivity
Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay:
Nuclear Transmutation
Radioactivity and Nuclear Equations
A nuclide of an element has a specific number of protons and...
Nuclear Stability
To hold positively charged protons together...
Nuclear Fission
Atomic Emission Spectroscopy: Instrumentation
