Measurement of the energy distribution of bremsstrahlung using Compton scattering

Abstract

The GEANT 4.9.2 software package is applied for the simulation of primary and Compton scat tered bremsstrahlung spectra. The possibility of restoring primary γ radiation spectra with the energy 0.02-1200 MeV using Compton scattering on secondary scattering targets is studied. The advantages of light targets using are demonstrated. An additional bremsstrahlung contribution from e ± pairs is calculated for high energy γ quanta; the influence of CXR on the form of scattered X ray quantum spectra is estimated. The spec tra which have a multipeak structure are restored. For high energy γ quanta there occurs significant spread of energies in the Compton scattered radiation spectrum, which imposes stringent conditions on collimation and detector resolution capability. The possibility of measuring the bremsstrahlung spectra from a primary target during high angle Compton scattering is estimated.

Bremsstrahlung of Electrons and Yield of Neutrons From Thick Converters, Passing of Gamma Radiation and Neutrons Through Biological Shielding

“…Thus, the characteristic "Compton scattering trapezoidal spectrum" is better manifested on thick converters from light elements and practically stop being visible for heavy elements, where bremsstrahlung dominates at large angles. The results agree well with the data of [7,14].…”

“…The energy and angular characteristics of the gamma radiation of the electrons with different energies from various converters were calculated similarly to [7,8,23]. The gamma radiation was calculated in spherical geometry for different value of the polar angle (0...π radian).…”

“…Earlier, we calculated angular and energy distributions of the bremsstrahlung yield at small angles for the electrons with energy 300...1200 M eV from various converters. Angular distributions of the gamma radiation yield N γ (Θ) were obtained, the angular width Θ 1/2 was determined at half-height of the distributions [7][8][9]. The noticeable increase of value Θ 1/2 was observed with increasing thickness and charge of the target.…”