Validity of sum rules for the polarization transfer in electron bremsstrahlung

Jakubaßa-Amundsen, Doris H.

doi:10.1140/epjd/e2017-80056-3

Cited by 4 publications

(3 citation statements)

References 46 publications

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“…Results show that the PT effect is very similar to the polarized electron bremsstrahlung process. Recent works have given a relatively complete picture of the correlations for the PT between incident light and ejected photoelectrons as well as between an incoming electron beam and bremsstrahlung light [31,40,[46][47][48]. The present work further suggests a common behavior of the polarization correlations in these two processes, or rather, the characteristics of the polarization correlations between (i) incident photon and emitted electron, (ii) incident electron and emitted photon, and (iii) incident photon and emitted photon.…”

Section: Resultssupporting

confidence: 58%

Polarization transfer in x-ray transitions due to photoionization in highly charged copper-like ions

Chen

Xie

et al. 2018

J. Phys. B: At. Mol. Opt. Phys.

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Using the density matrix theory and the multi-configuration Dirac-Fock method, the d 3 3 2 subshell photoionization of highly charged ions is studied, together with their subsequent radiative decay. The effects of polarization transfer on the linear polarization and angular distribution of the  d s D d p P 3 4 3 4 9 2 2 3 2 10 2 1 2 characteristic line photoemission for selected Cu-like Zn + , Ba 27+ , + W 45 , and + U 63 ions are investigated. Our results show that the polarization transfer, arising from the originally polarized incident light, may lead to a considerable change in the alignment parameters and the polarization properties of the radiation, the character of which is highly sensitive to the initial photon polarization, yet virtually independent of the photon energy. These characteristics are very similar to those of the electron bremsstrahlung process reported by Märtin et al (2012 Phys. Rev. Lett. 108 264801). The present results are compared with available experimental results and show a good quantitative agreement.

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Section: Resultssupporting

confidence: 58%

Polarization transfer in x-ray transitions due to photoionization in highly charged copper-like ions

Chen

Xie

et al. 2018

J. Phys. B: At. Mol. Opt. Phys.

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“…Transverse beam SSA for scattering in the Coulomb field of a nucleus was calculated a long time ago by Mott [79]. Examples of more recent work for the scattering on large-Z nuclei may be found in [80,81], where the Dirac equation is solved for the electron wave function in Coulomb field of nuclei. For low-Z targets both TPE and Distorted-Wave Born Approximation calculations yield the same results for the beam SSA to order O(α) that has the following behavior at small scattering angles θ e << 1:…”

Section: Two-photon Exchange For Spin Polarization Effectsmentioning

confidence: 99%

Two-photon exchange in elastic electron–proton scattering

Afanasev

Blunden

Hasell

et al. 2017

Progress in Particle and Nuclear Physics

101

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We review recent theoretical and experimental progress on the role of two-photon exchange (TPE) in electron-proton scattering at low to moderate momentum transfers. We make a detailed comparison and analysis of the results of competing experiments on the ratio of e + p to e − p elastic scattering cross sections, and of the theoretical calculations describing them. A summary of the current experimental situation is provided, along with an outlook for future experiments.

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“…On the other side, the numerical accuracy and method discrepancies in the presented results have been checked by comparing with other available codes [26] finding that it is within the 0.1% accuracy. Taking into account all the previous considerations, the theoretical calculations presented here might be used for the calibration of a Mott polarimeter to an accuracy of 0.5% in the region of interest.…”

Section: -P4mentioning

confidence: 93%

Theoretical calculations for precision polarimetry based on Mott scattering

Roca-Maza¹

2017

EPL

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-Electron polarimeters based on Mott scattering are extensively used in different fields in physics such as atomic, nuclear or particle physics. This is because spin-dependent measurements give additional information on the physical processes under study. The main quantity that needs to be understood in very much detail, both experimentally and theoretically, is the spin-polarization function, so-called analyzing power or Sherman function. A detailed theoretical analysis on all the contributions to the effective interaction potential that are relevant at the typical electron beam energies and angles commonly used in the calibration of the experimental apparatus is presented. The main contribution leading the theoretical error on the Sherman function is found to correspond to radiative corrections that have been qualitatively estimated to be below the 0.5% for the considered kinematical conditions: unpolarized electron beams of few MeV elastically scattered from a gold and silver targets at backward angles.

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Validity of sum rules for the polarization transfer in electron bremsstrahlung

Cited by 4 publications

References 46 publications

Polarization transfer in x-ray transitions due to photoionization in highly charged copper-like ions

Polarization transfer in x-ray transitions due to photoionization in highly charged copper-like ions

Two-photon exchange in elastic electron–proton scattering

Theoretical calculations for precision polarimetry based on Mott scattering

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