In proton radiography,degeneracy of electric and magnetic fields in deflecting the probe protons can prevent full interpretation of proton flux perturbations in the detection plane.In this paper,theoretical analyses a...In proton radiography,degeneracy of electric and magnetic fields in deflecting the probe protons can prevent full interpretation of proton flux perturbations in the detection plane.In this paper,theoretical analyses and numerical simulations suggest that the contributions of the electric and magnetic fields can be separately obtained by analyzing the difference between the flux distributions of two discriminated proton energies in a single shot of proton radiography.To eliminate the influence of field evolution on the separation,a strategy is proposed in which slow field evolution is assumed or an approximate estimate of field growth is made.This could help achieve a clearer understanding of the radiographic process and allow further quantitative analysis.展开更多
基金supported by the Science Challenge Project(No.TZ2016005)the China Postdoctoral Science Foundation(No.2019M660559)+1 种基金the National Natural Science Foundation of China[Grant Nos.11975055 and U1730449(NSAF)]the National Key Programme for S&T Research and Development in China(Grant No.2016YFA0401100).
文摘In proton radiography,degeneracy of electric and magnetic fields in deflecting the probe protons can prevent full interpretation of proton flux perturbations in the detection plane.In this paper,theoretical analyses and numerical simulations suggest that the contributions of the electric and magnetic fields can be separately obtained by analyzing the difference between the flux distributions of two discriminated proton energies in a single shot of proton radiography.To eliminate the influence of field evolution on the separation,a strategy is proposed in which slow field evolution is assumed or an approximate estimate of field growth is made.This could help achieve a clearer understanding of the radiographic process and allow further quantitative analysis.
