Classical Models of H\({}_{3}^{+}\) Interacting with Intense Laser Fields

  • E. LötstedtEmail author
  • T. Kato
  • K. Yamanouchi
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 125)


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.



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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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Department of Chemistry, School of ScienceThe University of TokyoTokyoJapan

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