This special issue aims to provide a platform for the dissemination of cutting-edge research and developments in the realm of X-ray spectra characterization, calibration, and dosimetry. The significance lies in addressing the evolving needs of the scientific and medical communities, promoting advancements that contribute to improved precision in X-ray-based applications, radiation protection, and medical diagnostics. The objectives encompass showcasing the latest innovations, exploring practical applications across scientific and medical domains, fostering collaboration and knowledge exchange among researchers, practitioners, and professionals, and actively contributing to the establishment of best practices and standards in X-ray physics and dosimetry. Ultimately, the special issue aims to propel the field forward by promoting impactful research and facilitating a collaborative environment for the exchange of ideas and expertise.

This issue will present papers that explore recent advances in nuclear techniques, including nuclear imaging, radiation therapy, dosimetry, the establishment of reference radiation, and dosemeters calibration.

We invite researchers and practitioners in the field of X-ray spectra characterization to submit their original research contributions. This special issue aims to facilitate knowledge exchange, stimulate discussions, and advance the field by highlighting the latest innovations in measuring equipment calibration as well as dosimetry