Community proposal to study iron and iron alloy phases at high pressure and temperature conditions at the European XFEL. Experiment EuXFEL #3063. September 2022. The archive holds The list of samples The list of runs Data from sample screening at PETRA III XFEL beam intensity information for all runs Calibration information for X-ray diffraction data at the EuXFEL Raw data from the corresponding publications. Information on the experiment, data analysis procedure, and corresponding metrology are published in Ginestet et al, 2006 (see below). If used, please cite this archive as well as the corresponding publication: Ginestet et al, Metrology for femtosecond pulsed x-ray heating in diamond anvil cell experiments at the European XFEL: Revisiting the iron phase diagram up to 150 GPa, J. Appl. Phys. 139, 045901 (2026); doi: 10.1063/5.0303953 Zuzana Konôpková, Eric Edmund, et al, Observation of Body-Centered Cubic Iron above 200 Gigapascals, Physical review B (2026) https://doi.org/10.1103/kxnf-6c5y