X-Ray Photoelectron Spectroscopy: Physical concepts and experimental processes

Nature and processes involving charged particles, such as electrons and protons, are extensively studied by high school students and in undergraduate courses. The X-Ray Photoelectron Spectroscopy technique, for example, is developed from physical phenomena of photon and matter interaction. This analytical technique is increasingly used in the characterization of terrestrial rocks, in space missions to Mars, as well as in meteorite analysis. Thus, the objective of this work is to present in a synthesized and simple way the concepts of X-ray Photoelectron Spectroscopy. Thus, it is not part of the proposal to have a detailed deepening of the technique, and for greater specificities, readers will be able to obtain through complementary materials and with the assistance of more specialized technicians in the equipment of interest. Finally, some spectra obtained through the use of the technique on a Martian meteorite will be presented and the results briefly explained. It is hoped that this will serve as initial and support material for students who are beginning to develop scientific interests and are looking for alternative techniques for their research, such as the connection between physical concepts and their applicability.

涉及电子、质子等带电粒子的自然现象与物理过程，是高中生及本科阶段课程中广泛涉猎的学习内容。以X射线光电子能谱（X-Ray Photoelectron Spectroscopy）技术为例，其理论基础源自光子与物质相互作用的物理现象。该分析技术正愈发广泛地应用于陆地岩石表征、火星深空探测任务以及陨石分析等场景。因此，本研究旨在以简洁凝练且通俗易懂的方式，阐述X射线光电子能谱的核心概念。本文不对该技术展开过于深入的探讨；若需获取更多针对性细节，读者可通过补充学习材料，或向相关设备领域的专业技术人员咨询。最后，本文将展示利用该技术对一块火星陨石进行测试所获得的部分能谱，并对测试结果进行简要阐释。期望本文能够为初萌科研兴趣、正探寻科研适用技术（例如探索物理概念与其实际应用之间的关联）的学生，提供入门级辅助参考资料。