Validating polarization effects in γ-rays elastic scattering by Monte Carlo simulation

The polarization properties of γ -rays elastically scattered by atoms have become more observable with the development of polarized photon beams. However, systematic studies are required to explore the elastic scattering in the MeV-energy range of the spectrum where Delbrück scattering becomes more...

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Main Authors: Mohamed Omer, Ryoichi Hajima
Format: Article
Language:English
Published: IOP Publishing 2019-01-01
Series:New Journal of Physics
Subjects:
Online Access:https://doi.org/10.1088/1367-2630/ab4d8a
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author Mohamed Omer
Ryoichi Hajima
author_facet Mohamed Omer
Ryoichi Hajima
author_sort Mohamed Omer
collection DOAJ
description The polarization properties of γ -rays elastically scattered by atoms have become more observable with the development of polarized photon beams. However, systematic studies are required to explore the elastic scattering in the MeV-energy range of the spectrum where Delbrück scattering becomes more significant, especially at large scattering angles. We implement a new Monte Carlo simulation to account for the polarization effects of elastic scattering. The simulation is based on explicit expressions driven in the formalism of Stokes parameters. The scattering amplitudes of Rayleigh, nuclear Thomson, and Delbrück scattering processes are superimposed onto a two orthogonal set of complex amplitudes. This set is then exploited to construct the core of the simulation in such a way that the simulation can handle arbitrary polarization states of the incoming beam and correspondingly generate polarization states of the outgoing beam. We demonstrate how the polarization of scattered photons is affected by the polarization of incoming photons. In addition, we explain the dependence of depolarization on the azimuthal angle.
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spelling doaj.art-71a81a5f23284f9da6f90fa661702a772023-08-08T15:25:15ZengIOP PublishingNew Journal of Physics1367-26302019-01-01211111300610.1088/1367-2630/ab4d8aValidating polarization effects in γ-rays elastic scattering by Monte Carlo simulationMohamed Omer0https://orcid.org/0000-0001-9668-7545Ryoichi Hajima1https://orcid.org/0000-0002-0383-9851Integrated Support Center for Nuclear Nonproliferation and Nuclear Security, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195 JapanIntegrated Support Center for Nuclear Nonproliferation and Nuclear Security, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195 Japan; Tokai Quantum Beam Science Center, National Institutes for Quantum and Radiological Science and Technology , Tokai, Ibaraki 319-1106, JapanThe polarization properties of γ -rays elastically scattered by atoms have become more observable with the development of polarized photon beams. However, systematic studies are required to explore the elastic scattering in the MeV-energy range of the spectrum where Delbrück scattering becomes more significant, especially at large scattering angles. We implement a new Monte Carlo simulation to account for the polarization effects of elastic scattering. The simulation is based on explicit expressions driven in the formalism of Stokes parameters. The scattering amplitudes of Rayleigh, nuclear Thomson, and Delbrück scattering processes are superimposed onto a two orthogonal set of complex amplitudes. This set is then exploited to construct the core of the simulation in such a way that the simulation can handle arbitrary polarization states of the incoming beam and correspondingly generate polarization states of the outgoing beam. We demonstrate how the polarization of scattered photons is affected by the polarization of incoming photons. In addition, we explain the dependence of depolarization on the azimuthal angle.https://doi.org/10.1088/1367-2630/ab4d8aγ-ray elastic scatteringpolarization effectsMonte Carlo simulationStokes parameters
spellingShingle Mohamed Omer
Ryoichi Hajima
Validating polarization effects in γ-rays elastic scattering by Monte Carlo simulation
New Journal of Physics
γ-ray elastic scattering
polarization effects
Monte Carlo simulation
Stokes parameters
title Validating polarization effects in γ-rays elastic scattering by Monte Carlo simulation
title_full Validating polarization effects in γ-rays elastic scattering by Monte Carlo simulation
title_fullStr Validating polarization effects in γ-rays elastic scattering by Monte Carlo simulation
title_full_unstemmed Validating polarization effects in γ-rays elastic scattering by Monte Carlo simulation
title_short Validating polarization effects in γ-rays elastic scattering by Monte Carlo simulation
title_sort validating polarization effects in γ rays elastic scattering by monte carlo simulation
topic γ-ray elastic scattering
polarization effects
Monte Carlo simulation
Stokes parameters
url https://doi.org/10.1088/1367-2630/ab4d8a
work_keys_str_mv AT mohamedomer validatingpolarizationeffectsingrayselasticscatteringbymontecarlosimulation
AT ryoichihajima validatingpolarizationeffectsingrayselasticscatteringbymontecarlosimulation