In cancer therapy with fast charged particles, the energy deposition (“dose”) near the end of the range of the particles must be determined with an error of less than 2%. The dose is strongly influenced by straggling and multiple scattering effects. Calculations of straggling have been made in which spectra of protons with an initial energy of 70 MeV were obtained for successive layers of water. An average multiple scattering correction was made in each layer. The ionization in a thin gas layer as a function of absorber thickness was determined. It agrees quite well with measured ionization curves.
No takes yet. Share an insight, caveat, or question.
Bichsel et al. (2009) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: