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| Autori principali: | , , , , , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2506.00767 |
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| _version_ | 1866916771691233280 |
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| author | Chen, Kaijie Wang, Xiangfei Xu, Hanghua Fan, Gongtao Hao, Zirui Liu, Longxiang Zhang, Yue Jin, Sheng Li, Zhicai Jiao, Pu Sun, Qiankun Wang, Zhenwei Zhou, Mengdie Xu, Mengke Wang, Hongwei Shen, Wenqing Ma, Yugang |
| author_facet | Chen, Kaijie Wang, Xiangfei Xu, Hanghua Fan, Gongtao Hao, Zirui Liu, Longxiang Zhang, Yue Jin, Sheng Li, Zhicai Jiao, Pu Sun, Qiankun Wang, Zhenwei Zhou, Mengdie Xu, Mengke Wang, Hongwei Shen, Wenqing Ma, Yugang |
| contents | The interaction of photons with relativistic electrons constitutes a fundamental electromagnetic process whose polarization transfer mechanics remain incompletely characterized. We report the first systematic measurement of spatial polarization distribution for $γ$-rays generated via \SI{45}{\degree} slant inverse Compton scattering (ICS) between linearly polarized \SI{0.117}{\eV} photons and \SI{3.5}{\GeV} electrons, performing full 2D mapping of intensity, polarization angle (AOP), and degree of polarization (DOP). Measurements reveal an asymmetric beam profile along the laser's polarization direction that resembles \SI{180}{\degree} backward ICS observations. The central beam region exhibits DOP $\approx$ 1.0 with AOP rigidly aligned at \SI{45}{\degree}, while peripheral regions display complex non-uniform polarization distributions. These findings confirm quantum electrodynamics predictions of near-complete polarization transfer along the beam axis in slant geometries, thus establishing slant scattering as a viable alternative to head-on configurations for generating high DOP $γ$-rays. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_00767 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | First systematic experimental 2D mapping of linearly polarized $γ$-ray polarimetric distribution in relativistic Compton scattering Chen, Kaijie Wang, Xiangfei Xu, Hanghua Fan, Gongtao Hao, Zirui Liu, Longxiang Zhang, Yue Jin, Sheng Li, Zhicai Jiao, Pu Sun, Qiankun Wang, Zhenwei Zhou, Mengdie Xu, Mengke Wang, Hongwei Shen, Wenqing Ma, Yugang Nuclear Experiment Classical Physics The interaction of photons with relativistic electrons constitutes a fundamental electromagnetic process whose polarization transfer mechanics remain incompletely characterized. We report the first systematic measurement of spatial polarization distribution for $γ$-rays generated via \SI{45}{\degree} slant inverse Compton scattering (ICS) between linearly polarized \SI{0.117}{\eV} photons and \SI{3.5}{\GeV} electrons, performing full 2D mapping of intensity, polarization angle (AOP), and degree of polarization (DOP). Measurements reveal an asymmetric beam profile along the laser's polarization direction that resembles \SI{180}{\degree} backward ICS observations. The central beam region exhibits DOP $\approx$ 1.0 with AOP rigidly aligned at \SI{45}{\degree}, while peripheral regions display complex non-uniform polarization distributions. These findings confirm quantum electrodynamics predictions of near-complete polarization transfer along the beam axis in slant geometries, thus establishing slant scattering as a viable alternative to head-on configurations for generating high DOP $γ$-rays. |
| title | First systematic experimental 2D mapping of linearly polarized $γ$-ray polarimetric distribution in relativistic Compton scattering |
| topic | Nuclear Experiment Classical Physics |
| url | https://arxiv.org/abs/2506.00767 |