Spatial profiles of positrons injected at low energies into water: influence of cross section models

Abstract

Methods and progress in studying inelastic interactions between positrons and atoms R D DuBois Experimental studies of positrons scattering in gases M Charlton Positron cooling by vibrational and rotational excitation of molecular gases

Theoretical study of positron scattering by group 14 tetra hydrides: A quantum mechanical approach

“…Modeling of such applications is needed as it can provide a better understanding of the fundamental phenomena, and assist optimization of these applications for social benefit. These facts are well documented in the recent positron‐transport Monte Carlo simulation studies . However, two types of input data are required in these modeling.…”

Recommended Positron Scattering Cross Sections for Atomic Systems

“…Positrons are now widely used in most major hospitals in the diagnostic technique Positron Emission Tomography (PET), yet little is known of "positron dosimetry" or the interactions that a high energy positron undergoes in the body when thermalising, through scattering, from several hundred keV to the low energies required for positronium formation and subsequent annihilation. The role of positron and positronium transport is not well understood in these environments, and so much of the recent work in this area has focused on interactions with biologically relevant molecules [9,10].…”

A comparison of experimental and theoretical low energy positron scattering from furan

“…In recent years, there has been a push toward developing more sophisticated models of positron interactions with a range of molecules that can be used as templates to build up better descriptions of how positrons interact in biological systems. [1][2][3] This work is predominantly driven by the increasingly widespread use of positron emission tomography as a medical imaging technique, particularly for tracking cancer treatment and spread, with a view to better understand the underlying mechanisms responsible for radiation damage. Calculations of even moderately complex molecules require a range of assumptions and approximations to make the problem tractable, so it is imperative that there are high quality experimental data to provide a strict test of accuracy in areas in which theory and experiment overlap.…”