We review the results obtained in several experimental campaigns with the INRS high-power laser system and determine the X-ray emission scaling from synchrotron radiation produced during laser wakefield acceleration (LWFA) of electrons. The physical processes affecting the generation of intense and stable X-ray beams during the propagation phase of the high-intensity ultrashort pulse in the gas jet target are discussed. We successfully produced stable propagation in the gas jet target of a relativistic laser pulse through self-guiding on length larger than the dephasing and depletion lengths, generating very intense beams of hard X-rays with up to 200 TW on target. The experimental scaling law obtained for the photon yield in the 10-40 keV range is presented and the level of X-ray emission at the 1 PW laser peak power level, now available at several laser facilities, is estimated.

中文翻译：

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基于激光的同步加速器X射线辐射实验缩放。

我们回顾了使用INRS大功率激光系统在几个实验活动中获得的结果，并确定了电子在激光尾场加速（LWFA）期间产生的同步加速器辐射的X射线发射比例。讨论了影响高强度超短脉冲在气体喷射靶中传播阶段期间产生强而稳定的X射线束的物理过程。通过自导长度大于移相和耗尽长度，我们成功地在相对论激光脉冲的气体喷射目标中产生了稳定的传播，在目标上产生了高达200 TW的非常强烈的硬X射线束。给出了在10-40 keV范围内获得的光子产量的实验比例定律，并给出了1 PW激光峰值功率水平下的X射线发射水平，