Scattering length of the ground state Mg+Mg collision

Abstract

We have constructed the X 1SIGMAg+ potential for the collision between two ground state Mg atoms and analyzed the effect of uncertainties in the shape of the potential on scattering properties at ultra-cold temperatures. This potential reproduces the experimental term values to 0.2 inverse cm and has a scattering length of +1.4(5) nm where the error is prodominantly due to the uncertainty in the dissociation energy and the C6 dispersion coefficient. A positive sign of the scattering length suggests that a Bose-Einstein condensate of ground state Mg atoms is stable.

15 pages, 3 figures, Submitted Phys. Rev. A

References in corpus (5)

• Absolute Frequency Measurements of the Hg^+ and Ca Optical Clock Transitions with a Femtosecond Laser
• Doppler cooling and trapping on forbidden transitions
• Quenched Narrow-Line Laser Cooling of 40Ca to Near the Photon Recoil Limit
• High-accuracy relativistic many-body calculations of van der Waals coefficients C_6 for alkaline-earth atoms
• Calculations of collisions between cold alkaline earth atoms in a weak laser field

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