Tashenov, S. ; Bäck, T. ; Barday, R. ; Cederwall, B. ; Enders, J. ; Khaplanov, A. ; Fritzsche, Yu. ; Schässburger, K.-U. ; Surzhykov, A. ; Yerokhin, V. A. ; Jakubassa-Amundsen, D. (2013)
Bremsstrahlung polarization correlations and their application for polarimetry of electron beams.
In: Physical Review A, 87 (2)
doi: 10.1103/PhysRevA.87.022707
Article, Bibliographie
Abstract
Linear polarization of hard x rays emitted in the process of atomic-field electron bremsstrahlung has been measured with a polarized electron beam. The correlation between the initial orientation of the electron spin and the angle of photon polarization has been systematically studied by means of Compton and Rayleigh polarimetry techniques applied to a segmented germanium detector. The results are in good agreement with those of fully relativistic calculations. The observed correlations are also explained classically and in a unique way manifest that due to the spin-orbit interaction the electron scattering trajectory is not confined to a single scattering plane. The developed photon polarimetry technique with a passive scatterer is very efficient and accurate and thus allows for additional applications. Bremsstrahlung polarization correlations lead to an alternative method of polarimetry of electron beams. Such a method is sensitive to all three components of the electron spin. It can be applied in a broad range of the electron beam energies from ≈100 keV up to a few tens of MeV. The results of a measurement at 100 keV are shown. The optimum scheme for electron polarimetry is analyzed and the relevant theoretical predictions are presented.
| Item Type: | Article |
|---|---|
| Erschienen: | 2013 |
| Creators: | Tashenov, S. ; Bäck, T. ; Barday, R. ; Cederwall, B. ; Enders, J. ; Khaplanov, A. ; Fritzsche, Yu. ; Schässburger, K.-U. ; Surzhykov, A. ; Yerokhin, V. A. ; Jakubassa-Amundsen, D. |
| Type of entry: | Bibliographie |
| Title: | Bremsstrahlung polarization correlations and their application for polarimetry of electron beams |
| Language: | English |
| Date: | 19 February 2013 |
| Publisher: | APS Physics |
| Journal or Publication Title: | Physical Review A |
| Volume of the journal: | 87 |
| Issue Number: | 2 |
| DOI: | 10.1103/PhysRevA.87.022707 |
| Abstract: | Linear polarization of hard x rays emitted in the process of atomic-field electron bremsstrahlung has been measured with a polarized electron beam. The correlation between the initial orientation of the electron spin and the angle of photon polarization has been systematically studied by means of Compton and Rayleigh polarimetry techniques applied to a segmented germanium detector. The results are in good agreement with those of fully relativistic calculations. The observed correlations are also explained classically and in a unique way manifest that due to the spin-orbit interaction the electron scattering trajectory is not confined to a single scattering plane. The developed photon polarimetry technique with a passive scatterer is very efficient and accurate and thus allows for additional applications. Bremsstrahlung polarization correlations lead to an alternative method of polarimetry of electron beams. Such a method is sensitive to all three components of the electron spin. It can be applied in a broad range of the electron beam energies from ≈100 keV up to a few tens of MeV. The results of a measurement at 100 keV are shown. The optimum scheme for electron polarimetry is analyzed and the relevant theoretical predictions are presented. |
| Uncontrolled Keywords: | Bremsstrahlung, Polarized Electron Source, Correlation, Polarimetry, Compton Polarimeter, HPGe detector, Linear Polarization, Polarized Electron Beam, Polarized Photons, SFB634, C5, E4 |
| Additional Information: | Art.No.: 022707 |
| Divisions: | DFG-Collaborative Research Centres (incl. Transregio) DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres 05 Department of Physics 05 Department of Physics > Institute of Nuclear Physics DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Accelerator (S-DALINAC) DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Accelerator (S-DALINAC) > C: Fundamentale Experimente DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Accelerator (S-DALINAC) > C: Fundamentale Experimente > C5: Experimente mit polarisierten Elektronen und Photonen DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Accelerator (S-DALINAC) > E: Beschleunigerentwicklung DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 634: Nuclear Structure, Nuclear Astrophysics and Fundamental Experiments at Low Momentum Transfer at the Superconducting Darmstadt Accelerator (S-DALINAC) > E: Beschleunigerentwicklung > E4: Neues Injektorkonzept |
| Date Deposited: | 10 Feb 2014 12:25 |
| Last Modified: | 27 Nov 2023 12:25 |
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