标题： X射线真空衍射中曲率效应的新估计，该衍射由强激光场引起 显示英文标题

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

摘要： 量子电动力学通过虚拟带电粒子预测在高强度激光场下的X射线衍射，这一现象称为真空衍射（VD）。 在本文中，我们推导了一个新公式来描述XFEL脉冲和激光脉冲正面对撞几何中的VD。 该公式首次考虑了XFEL脉冲的波前曲率。 利用该公式，我们还基于SACLA XFEL设施的实际参数讨论了曲率效应对VD信号的影响。 显示英文摘要

摘要： 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.