Journal of Experimental and Theoretical PhysicsJournal of Experimental and Theoretical PhysicsЖурнал экспериментальной и теоретической физики0044-45103034-641XThe Russian Academy of Sciences25647810.31857/S0044451024020044ArticlesСтатьиResearch ArticleNON-SEQUENTIAL DOUBLE IONIZATION OF THE ALKALINE EARTH ATOMS WITH A NEAR-SINGLE CYCLE LASER PULSE IN A LINEARLY POLARIZED LASER FIELDNON-SEQUENTIAL DOUBLE IONIZATION OF THE ALKALINE EARTH ATOMS WITH A NEAR-SINGLE CYCLE LASER PULSE IN A LINEARLY POLARIZED LASER FIELDDelibašić MarkovićH.
Serbia
hristinadelibasic@pmf.kg.ac.rsPetrovićV.
Serbia
hristinadelibasic@pmf.kg.ac.rsPetrovićI.
Serbia
hristinadelibasic@pmf.kg.ac.rsFaculty of Science, University of KragujevacФакультет естественных наук, Университет КрагуевацаAcademy of Professional Studies Šumadija, Department in KragujevacАкадемия профессиональных исследований Шумадия, отделение в Крагуеваце150220241652VOL 165, NO2 (2024)ТОМ 165, №2 (2024)19119510062024Copyright ©; 2024, Russian Academy of SciencesCopyright ©; 2024, Российская академия наук2024Russian Academy of SciencesРоссийская академия наукhttps://journals.rcsi.science/0044-4510/article/view/256478

In this paper, we developed an analytical model to study non-sequential double ionization (NSDI) induced by electron-electron correlation of alkaline earth atoms by 800 nm laser. The presented model includes all relevant interactions between the electrons and the laser field. We focused on the semiclassical regime, where the assistance of laser radiation is mandatory to create a doubly charged ion. The obvious advantage of our model is that it provides time-resolved insights into the complex ynamics of NSDI from the initial to the final stages. After an extensive study, it was concluded that the observed phenomenon can be generally understood within single ionization and recollision picture. Presented results may shed light on attosecond dynamics of electron correlation during NSDI.

In this paper, we developed an analytical model to study non-sequential double ionization (NSDI) induced by electron-electron correlation of alkaline earth atoms by 800 nm laser. The presented model includes all relevant interactions between the electrons and the laser field. We focused on the semiclassical regime, where the assistance of laser radiation is mandatory to create a doubly charged ion. The obvious advantage of our model is that it provides time-resolved insights into the complex ynamics of NSDI from the initial to the final stages. After an extensive study, it was concluded that the observed phenomenon can be generally understood within single ionization and recollision picture. Presented results may shed light on attosecond dynamics of electron correlation during NSDI.

This work was supported by the Science Fund of the Republic of Serbia through Program PRISMA - Atoms and (bio)molecules-dynamics and collisional processes on short time scale (ATMOLCOL), Serbian Ministry of Education, Science and Technological Development (Agreement No. 451-03-47/2023-01/200122) and COST Action CA18222 «Attosecond Chemistry»Z. X. Lei, Q. Y. Xu, Z. J. Yang, Y. L. He, and J.Guo, Chin. Phys. B. 31, 063202 (2022).S. L. Haan, L. Breen, A. Karim, and J. H. Eberly, Opt. Express. 15, 767 (2007).B. HuP, J. Liu, and S. Chen, Phys. Lett. A 236, 533 (1997).V. V. Suran and I. P. Zapesochny, Sov. Tech. Phys. Lett. 1, 2 (1975).F. Mauger, C. Chandre, and T. Uzer, J. Phys. B: At. Mol. Opt. Phys. 42, 165602 (2009).L. Sarkadi, J. Phys. B: At. Mol. Opt. Phys. 53, 165401 (2020).X. M. Ma, A. H. Tong, Z. Wang, and C. Y. Zhai, Chin. Phys. B. 30, 123402 (2021).S. Augst, A. Talebpour, S. L. Chin, Y. Beaudoin, and M. Chaker, Phys. Rev. A 52, R917 (1995).L. B. Fu, G. G. Xin, D. F. Ye, and J. Liu, Phys. Rev. Lett. 108, (2012).Y. Li, B. Yu, Q. Tang, X. Wang, D. Hua, A. Tong, C. Jiang, G. Ge, Y. Li, and J. Wan, Opt. Express 24, 6469 (2016).P. B. Corkum, Phys. Rev. Lett 71(13), 1994 (1993).R. Lafon, J. L. Chaloupka, B. Sheehy, P. M. Paul, P.Agostini, K. C. Kulander, and L. F. DiMauro, Phys. Rev. Lett 86, 2762 (2001).W. Becker, X. Liu, P. J. Ho, and J. H. Eberly, Rev. Mod. Phys. 84, 1011 (2012).Y. Liu, S. Tschuch, M. Durr, A. Rudenko, R.Moshammer, J. Ullrich, M. Siegel, and U.Morgner, Opt. Express 15, 18103 (2007).A. S. Johnson, A. Staudte and D. M. Villeneuve, Chinese J. Phys. 52, 329 (2014).D. I. Bondar, W. K. Liu, and M. Yu. Ivanov, Phys. Rev. A 79(2), (2009).X. M. Tong and C. D. Lin, J. Phys. B 38(15), 2593-2600 (2005).Y. Li, L. Mei, H. Chen, J. Xu, Q. Tang, Y. Zhao, Q.Han, C. Wang, A. Tong, G. Ge, and B. Yu, Int. J.Mod. Phys. B 32, 1850302 (2018).V. M. Petrovic and T. B. Miladinovic, JETP 122, 813 (2016).H. P. Kang, S. Chen, W. Chu, J. P. Yao, J. Chen, X. J. Liu, Y. Cheng, and Z. Z. Xu, Opt. Express 28, 19325 (2020).