NUCLEAR REACTIONS AT 160 MeV PROTON ENERGY ON NATURAL CALCIUM

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Abstract

The study of radionuclide excitation functions in proton-induced nuclear reactions is of fundamental interest for in vivo treatment verification methods in proton therapy. However, experimental data for these reactions are very limited, especially for proton energies above 20 MeV, and show significant discrepancies. In the present work, experimental cross sections of reactions for accelerated protons with an energy of 160MeVon targets of metallic calcium of natural isotopic composition are measured. For the first time, new data have been obtained on the yield cross sections of reactions with the departure of one to five protons at 44Ca nuclei. Calculations of the obtained cross sections in the Fermi gas and Gogni–Hartree–Fock–Bogolyubov models using the TALYS1.96 program code are carried out. It is shown that pre-equilibrium processes dominate in the cross sections. It is noted that the calculated cross sections, as a rule, do not exceed 30% of the experimental ones.

About the authors

M. V. Zheltonozhskaya

Lomonosov Moscow State University, Faculty of Physics

Email: zhelton@yandex.ru
Moscow, Russia

A. V. Ovsyannikov

Lomonosov Moscow State University, Faculty of Physics

Moscow, Russia

A. E. Shemyakov

Physical-Technical Centre of the P.N. Lebedev Physical Institute of the Russian Academy of Sciences

Protvino, Russia

A. P. Chernyaev

Lomonosov Moscow State University, Faculty of Physics

Moscow, Russia

S. R. Adonyev

Lomonosov Moscow State University, Faculty of Physics

Moscow, Russia

A. A. Scherbakov

Lomonosov Moscow State University, Faculty of Physics

Moscow, Russia

O. V. Yatsenko

Burnazyan Federal Medical Biophysical Center

Moscow, Russia

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