Extreme ultraviolet (EUV) radiation refers to electromagnetic radiation with wavelengths in the range of 10 to 124 nanometers. This type of radiation is commonly used in various scientific research areas, including astronomy, semiconductor lithography, and plasma diagnostics. EUV radiation is particularly useful in imaging and studying extremely small features at the nanometer scale, as well as in ionization and excitation processes in matter. Researchers continue to explore new applications and technologies related to EUV radiation in various fields.