Mirani F, Maffini A, Casamichiela F, Pazzaglia A, Formenti A, Dellasega D, Russo V, Vavassori D, Bortot D, Huault M, Zeraouli G, Ospina V, Malko S, Apiñaniz J I, Pérez-Hernández J A, De Luis D, Gatti G, Volpe L, Pola A, Passoni M
Politecnico di Milano, Via Ponzio 34/3, I-20133 Milan, Italy.
Centro de Laseres Pulsados (CLPU), Edicio M5. Parque Científico. C/ Adaja, 8. Villamayor, 37185 Salamanca, Spain.
Sci Adv. 2021 Jan 15;7(3). doi: 10.1126/sciadv.abc8660. Print 2021 Jan.
Among the existing elemental characterization techniques, particle-induced x-ray emission (PIXE) and energy-dispersive x-ray (EDX) spectroscopy are two of the most widely used in different scientific and technological fields. Here, we present the first quantitative laser-driven PIXE and laser-driven EDX experimental investigation performed at the Centro de Láseres Pulsados in Salamanca. Thanks to their potential for compactness and portability, laser-driven particle sources are very appealing for materials science applications, especially for materials analysis techniques. We demonstrate the possibility to exploit the x-ray signal produced by the co-irradiation with both electrons and protons to identify the elements in the sample. We show that, using the proton beam only, we can successfully obtain quantitative information about the sample structure through laser-driven PIXE analysis. These results pave the way toward the development of a compact and multifunctional apparatus for the elemental analysis of materials based on a laser-driven particle source.
在现有的元素表征技术中，粒子诱导X射线发射（PIXE）和能量色散X射线（EDX）光谱是在不同科技领域中使用最广泛的两种技术。在此，我们展示了在萨拉曼卡的脉冲激光中心进行的首次定量激光驱动PIXE和激光驱动EDX实验研究。由于其紧凑性和便携性潜力，激光驱动粒子源对于材料科学应用非常有吸引力，特别是对于材料分析技术。我们证明了利用电子和质子共同辐照产生的X射线信号来识别样品中元素的可能性。我们表明，仅使用质子束，通过激光驱动PIXE分析就能成功获得有关样品结构的定量信息。这些结果为基于激光驱动粒子源开发用于材料元素分析的紧凑多功能仪器铺平了道路。
