Harris, J. G. E.Nguyen, S. V.Doret, S. C.Ketterle, W.Doyle, John2016-08-232007Harris, J. G. E., S. V. Nguyen, S. C. Doret, W. Ketterle, and J. M. Doyle. 2007. “Spin-Exchange Collisions of Submerged Shell Atoms Below 1 Kelvin.” Physical Review Letters 99 (22) (November 30). doi:10.1103/physrevlett.99.223201.0031-9007http://nrs.harvard.edu/urn-3:HUL.InstRepos:27868186Angular momentum changing collisions can be suppressed in atoms whose valence electrons are submerged beneath filled shells of higher principle quantum number. To determine whether spin-exchange collisions are suppressed in these ‘‘submerged shell’’ atoms, we measured collisional rates for six hyperfine states of Mn at T < 1 K. Although the 3d valence electrons in Mn are submerged beneath a filled 4s orbital, we find spin-exchange rate coefficients similar to Na and H (both nonsubmerged shell atoms).en-USJournal Article2016-08-2310.1103/PhysRevLett.99.223201