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Szumiński, Wojciech, 2026, "Source data for: Translational dynamics of diatomic molecule in magnetic quadrupole trap", https://doi.org/10.18150/EJI1O5, RepOD, V1
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We study the translational motions of homonuclear diatomic molecules prepared in their 3Σ electronic states, deeply bound vibrational states, and rotational states of well-defined parity. The trapping potential arises due to the interaction of the total spin of electrons and orbital angular momentum of nuclei with the trap’s quadrupole magnetic field. The translational motion of a molecule is treated classically.
We examine the Hamilton equations that govern the center of-mass dynamics both numerically and analytically. Using data of a hydrogen molecule at the ground vibrational state, we present global dynamics using the Poincaré section method and various types of trajectories: periodic, quasiperiodic, and chaotic. We prove that the Hamiltonian system governing this motion is non-integrable. The particle’s orbits are confined to a bound region of space that grows with energy, but for small energies (<1.8 K), the motion is restricted to a processing chamber (a few centimeters). Solutions of equations of motion occurring on the symmetry axis and the horizontal plane are expressed in terms of Jacobi elliptic functions.
Stark effect, electrostatic trap, heteronuclear diatomic molecules, semiclassical description, physics of cold molecules
Translational dynamics of diatomic molecule in magnetic quadrupole trap, Yurij Yaremko, Maria Przybylska, Andrzej Maciejewski, The Journal of Chemical Physics 163, 154305 (2025). https://doi.org/10.1063/5.0291088 doi: 10.1063/5.0291088
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