Sub-MeV tunably polarized X-ray production with laser Thomson backscattering |
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Authors: | Kawase K Kando M Hayakawa T Daito I Kondo S Homma T Kameshima T Kotaki H Chen L-M Fukuda Y Faenov A Shizuma T Fujiwara M Bulanov S V Kimura T Tajima T |
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Affiliation: | Kansai Photon Science Institute, Japan Atomic Energy Agency, 8-1 Umemidai, Kizugawa, Kyoto 619-0215, Japan. |
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Abstract: | Reported in this article is the generation of unique polarized x-rays in the sub-MeV region by means of the Thomson backscattering of the Nd:YAG laser photon with a wavelength of 1064 nm on the 150 MeV electron from the microtron accelerator. The maximum energy of the x-ray photons is estimated to be about 400 keV. The total energy of the backscattered x-ray pulse is measured with an imaging plate and a LYSO scintillator. The angular divergence of the x-rays is also measured by using the imaging plate. We confirm that the x-ray beam is polarized according to the laser polarization direction with the Compton scattering method. In addition, we demonstrate the imaging of the object shielded by lead with the generated x-rays. |
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