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Cold collisions of spin-polarized metastable hydrogen atoms
Physical Review A. Atomic, Molecular, and Optical Physics
Cross sections and rate coefficients for collisions of two spin-polarized metastable hydrogen atoms are calculated at low energies and temperatures using complex scaling and Feshbach projection methods for the determination of the molecular potential-energy curves. The inclusion of the Lamb shift and fine-structure splitting of the excited n ! 2 atoms leads to an attractive van der Waals potential for two 2s " 1/2 atoms # with an exceptionally $ large coefficient. The quenching of thedoi:10.1103/physreva.67.040701 fatcat:h4q4frvuxfczpoy5fj4za6hzm4