Resonance multiphoton ionization of alkaline Earth Ca, Ba, Sr atoms М. Tursunov, B. Gaibnazarov, Kh. Bakieva, B. Eltazarov and Z. Alimova E3S Web of Conf., 402 (2023) 14029 Published online: 19 July 2023 DOI: 10.1051/e3sconf/202340214029