TUNABLE SOURCE OF INTENSE, NARROWBAND, FULLY COHERENT, SOFT X-RAYS

A device for generating soft x-rays includes an electron source configured to generate an electron beam comprising electron micro- bunches; an electron accelerator configured to accelerate the electron micro-bunches from the electron source; and a laser configured to generate a laser beam (536) colliding with the accelerated electron micro-bunches (534) in a counterpropagating direction to generate the soft x-rays by inverse Compton scattering. The electron source has a magneto-optical trap configured to produce an ultracold atomic gas; two counterpropagating excitation laser beams configured to produce a standing wave for inducing a periodic spatial modulation of the ultracold atomic gas along a beam propagation direction; and an ionization laser configured to induce photo-ionization of the ultracold atomic gas. 一种用于产生软X射线的设备，包括：电子源，被配置为产生包括电子微聚束的电子束；电子加速器，被配置为使来自电子源的电子微聚束加速；以及激光器，被配置为产生激光束(536)，激光束与被加速的电子微聚束(534)在反向传播方向上碰撞以通过逆康普顿散射产生软X射线。电子源具有磁光阱，配置为产生超冷原子气体；两个反向传播的激励激光束，被配置为产生驻波，用于沿射束传播方向引起超冷原子气体的周期性空间调制；以