Discrepancies in experiments with cold hydrogen atoms

S.J.J.M.F. Kokkelmans, B.J. Verhaar

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11 Citations (Scopus)


Recent experiments with atomic clocks and hydrogen gas samples have shown discrepancies between theory and experiment. There are serious disagreements with respect to four different parameters: two different frequency shift parameters and a line broadening cross section relating to the H maser, and a longitudinal relaxation rate observed in a hydrogen gas sample. We study the changes in the short-range singlet and triplet potentials that would be needed to eliminate the above discrepancies. We find that no such changes can remove all four discrepancies simultaneously. In addition, we investigate a possible role of spin-dipole interactions, which have been neglected in previous calculations.
Original languageEnglish
Pages (from-to)4038-4044
Number of pages7
JournalPhysical Review A: Atomic, Molecular and Optical Physics
Issue number5
Publication statusPublished - 1 Nov 1997


  • Optical cooling of atoms
  • trapping
  • Mechanical effects of light on atoms molecules electrons and ions


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