AI 中文总结
首次利用1-10 GeV激光尾场产生的粒子束进行单次粒子射线照相，通过大体积闪烁体探测器确认束中μ子含量，模拟证实其高穿透性，建立了激光尾场加速器驱动源的单次高能粒子射线照相技术。
AI 中文摘要
我们报告了首次使用1-10 GeV激光尾场产生的μ子、π介子和中子束进行单次粒子射线照相的演示。测试对象在距束源约15米处成像，穿过致密铅屏蔽、建筑物墙壁和卡车。使用基于大体积闪烁体的探测器直接确认了束中的μ子含量，该探测器记录了与μ子寿命一致的定时延迟的粒子衰变事件。模拟证实，穿过测试对象的束的高能成分几乎完全由μ子组成，直接显示了它们的高穿透性，单次注量相当于地平线附近宇宙射线μ子8小时以上的积分。我们的工作建立了利用激光尾场加速器驱动源的单次高能粒子射线照相。
英文摘要
We report the first demonstration of single-shot particle radiography using a 1-10 GeV laser-wakefield-generated beam of muons, pions, and neutrons. The test objects were imaged ~15 m from the beam source, through dense lead shielding followed by the walls of a building and a truck. The muon content of the beam was directly confirmed using large volume scintillator-based detectors, which recorded particle decay events with timing delays consistent with the muon lifetime. Simulations confirm that the high energy component of the beam transmitted through the test object is nearly entirely composed of muons, directly showing their highly penetrative nature, with a single-shot fluence equivalent to >8 hours of integration of cosmic ray muons near the horizon. Our work establishes single-shot high-energy particle radiography with a laser-wakefield-accelerator-driven source.
