Fine-structure-changing collisions in atomic titanium

Details Fine-structure-changing collisions in atomic titanium Fine-structure-changing collisions in atomic titanium

Jun 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008phrva..77f0701l&link_type=abstract

Physical Review A, vol. 77, Issue 6, id. 060701

Physics

12

Scattering Of Atoms And Molecules, Level Crossing And Optical Pumping, Interatomic And Intermolecular Potentials And Forces, Potential Energy Surfaces For Collisions, Atomic Processes And Interactions

Scientific paper

We have measured cold titanium-helium collisions that cause transitions between the fine-structure levels of the [3d24s2]FJ3 electronic ground state of atomic titanium, over a temperature range from 5 to 20K . The Ti-He inelastic collision cross section is significantly smaller than cross sections measured for collisions of non-transition-metal atoms with noble gas atoms. Our theoretical calculations of the inelastic cross sections reproduce the magnitude and temperature dependence of the measurements, and attribute the suppression of inelastic collisions to titanium’s “submerged” d -shell valence electrons.

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