Impact of bombardment by Ar+, Na+ and O2+ ions on spectra of elastically scattered electrons of single-crystal GeSevara Abraeva, Dilnoza Tashmukhamedova, Soadat Gulyamova, Mahsuna Yusupjanova and Aziza XujaniyazovaE3S Web of Conf., 401 (2023) 05006DOI: https://doi.org/10.1051/e3sconf/202340105006