Abstract
Two different classical models are proposed for describing the interaction of H\({}_{3}^{+}\) with an intense laser field. In the first model, called the auxiliary potential method (APM), certain auxiliary, momentum-dependent potentials are added to the classical Hamiltonian. In the second model, called the soft-core potential model (SPM), the Coulomb potential is truncated at short distances and connected smoothly to a finite core potential by introducing a softening parameter. In both cases, the electrons are prevented from collapsing into the Coulomb singularity, which is a necessary condition to make the lowest-energy configuration of the molecule stable.
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Acknowledgements
We acknowledge support from the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan (Grant-in-Aid for Specially Promoted Research on Ultrafast Hydrogen Migration No. 19002006, and Grant-in-Aid for Global COE Program for Chemistry Innovation). E. Lötstedt is grateful for the support from a Grant-in-Aid for Scientific Research (No. 21-09238, JSPS).
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Lötstedt, E., Kato, T., Yamanouchi, K. (2012). Classical Models of H\({}_{3}^{+}\) Interacting with Intense Laser Fields. In: Yamanouchi, K., Katsumi, M. (eds) Multiphoton Processes and Attosecond Physics. Springer Proceedings in Physics, vol 125. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-28948-4_38
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DOI: https://doi.org/10.1007/978-3-642-28948-4_38
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