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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2505.11249 |
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| _version_ | 1866913071776137216 |
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| author | Novak, O. Diachenko, M. Kholodov, R. |
| author_facet | Novak, O. Diachenko, M. Kholodov, R. |
| contents | We present a theoretical study on the radiative self-polarization of a high-energy electron beam propagating perpendicular to a strong magnetic field. Recently, a similar setup has been proposed as a source of polarized electron and photon beams. We focus on the dependence of electron and radiation polarization on the dimensionless parameter $\varepsilon$, which is proportional to the product of electron energy and magnetic field strength. The numerical solution of the balance equation shows that the resulting electron beam polarization increases rapidly as a function of $\varepsilon$ for $\varepsilon \ll 1$ and saturates at a value of approximately $-0.8$. If $\varepsilon \gg 1$, the rate of self-polarization decreases significantly. At the same time, a substantial or nearly complete depolarization of synchrotron radiation is observed, particularly for an electron beam with spins initially aligned parallel to the field. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_11249 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Depolarization of synchrotron radiation of a relativistic electron beam Novak, O. Diachenko, M. Kholodov, R. High Energy Physics - Phenomenology We present a theoretical study on the radiative self-polarization of a high-energy electron beam propagating perpendicular to a strong magnetic field. Recently, a similar setup has been proposed as a source of polarized electron and photon beams. We focus on the dependence of electron and radiation polarization on the dimensionless parameter $\varepsilon$, which is proportional to the product of electron energy and magnetic field strength. The numerical solution of the balance equation shows that the resulting electron beam polarization increases rapidly as a function of $\varepsilon$ for $\varepsilon \ll 1$ and saturates at a value of approximately $-0.8$. If $\varepsilon \gg 1$, the rate of self-polarization decreases significantly. At the same time, a substantial or nearly complete depolarization of synchrotron radiation is observed, particularly for an electron beam with spins initially aligned parallel to the field. |
| title | Depolarization of synchrotron radiation of a relativistic electron beam |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2505.11249 |