Compendium to Radiation Physics for Medical Physicists by Ervin B. Podgoršak

Author:Ervin B. Podgoršak
Language: eng
Format: epub
Publisher: Springer Berlin Heidelberg, Berlin, Heidelberg

9.6.Q3 (209)

The most common and efficient means for production of clinical neutron beam in a cyclotron is to accelerate protons p or deuterons d in the energy range from 50 MeV to 70 MeV onto a thick beryllium-9 target. This results in neutron spectra that are characteristic of the particular nuclear reaction used, with the maximum neutron energy in the spectrum given as the sum of the incident charged particle kinetic energy and the reaction Q value for the particular nuclear reaction that produces the neutrons.

Neutron-generating nuclear reactions occurring in the beryllium-9 target are as follows

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