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New Estimation of the Curvature Effect for the X-ray Vacuum Diffraction Induced by an Intense Laser Field

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posted on 2023-11-30, 19:16 authored by Y. Seino, T. Inada, T. Yamazaki, T. Namba, S. Asai
Quantum electrodynamics predicts x-ray diffractions under a high-intensity laser field via virtual charged particles, and this phenomenon is called as vacuum diffraction (VD). In this paper, we derive a new formula to describe VD in a head-on collision geometry of an XFEL pulse and a laser pulse. A wavefront curvature of the XFEL pulse is newly considered in this formula. With this formula, we also discuss the curvature effect on VD signals based on realistic parameters at SACLA XFEL facility.

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