@article{bibcite_941, keywords = {paper}, author = {Charlotte Vernozy and Antonino Alessi and Olivier Cavani and Audrey Courpron and Johan Petit and Val{\'e}rie V{\'e}niard}, title = {Online and in situ investigation of electron irradiation induced optical absorption in ZnGeP2 single crystals}, abstract = {In the present study, the absorbance induced in Zinc germanium diphosphide, ZnGeP2 (ZGP) crystals and new Sn-doped ZGP crystals has been investigated under irradiation with high energy electrons. Online and in situ experiments were performed in the range 720{\textendash}1100~nm. The spectra of the induced absorbance are constituted by a {\textquotedblleft}tail{\textquotedblright} and the maximum appears to be located at wavelengths lower than those of the investigated spectral range. A fraction of the induced absorbance disappears within one minute after the electron beam is switched off, revealing the presence of metastable effects. A low and a high fluence contribution to the induced absorbance have been observed at 800~nm. The first reaches a limit value and seems to be affected by the Sn doping or by the absence of post-growth annealing, while the high fluence contribution does not feature a saturation in the investigated range and does not depend on the sample type.}, year = {2025}, journal = {Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms}, volume = {566}, pages = {165758}, issn = {0168-583X}, url = {https://www.sciencedirect.com/science/article/pii/S0168583X2500148X}, doi = {https://doi.org/10.1016/j.nimb.2025.165758}, }