The potential of the ground state of NaRb
Abstract
The X1 + state of NaRb was studied by Fourier transform spectroscopy. An accurate potential energy curve was derived from more than 8800 transitions in isotopomers 23Na85Rb and 23Na87Rb. This potential reproduces the experimental observations within their uncertainties of 0.003 to 0.007 . The outer classical turning point of the last observed energy level (v''=76, J''=27) lies at ≈ 12.4 , leading to a energy of 4.5 below the ground state asymptote.
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