title: Molecular-dynamics simulations of cold antihydrogen formation in strongly magnetized plasmas.
abstract: Employing a high-order symplectic integrator and an adaptive time-step algorithm, we perform molecular-dynamics simulations of antihydrogen formation, in a cold plasma confined by a strong magnetic field, over time scales of microseconds. Sufficient positron-antiproton recombination events occur to allow a statistical analysis for various properties of the formed antihydrogen atoms. Giant-dipole states are formed in the initial stage of recombination. In addition to neutral atoms, we also observe antihydrogen positive ions (H(+)), in which two positrons simultaneously bind to an antiproton.
authors.affiliation: Theoretical Division, Los Alamos National Laboratory, New Mexico 87545, USA. suxing@lanl.gov
authors.forename: S X
authors.initials: SX
authors.lastname: Hu
authors.forename: D
authors.initials: D
authors.lastname: Vrinceanu
authors.forename: S
authors.initials: S
authors.lastname: Mazevet
authors.forename: L A
authors.initials: LA
authors.lastname: Collins