X-ray emission is a research area within the field of physics and materials science that focuses on the production and detection of X-rays. X-rays are a form of electromagnetic radiation with wavelengths shorter than ultraviolet light, and they have the ability to penetrate materials and reveal internal structures. This makes X-rays valuable for a wide range of applications, including medical imaging, materials analysis, and security screening. In the research area of X-ray emission, scientists study the mechanisms by which X-rays are generated, such as through the interaction of high-energy electrons with matter or the decay of radioactive isotopes. They also investigate techniques for detecting and measuring X-rays, as well as optimizing the performance of X-ray sources for specific applications. X-ray emission research is interdisciplinary, drawing on principles from physics, chemistry, engineering, and biology to develop new technologies and advance our understanding of X-ray interactions with matter.