The potential of the ground state of NaRb

الأصل · EN

The X¹Σ⁺ 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 Å, leading to a energy of 4.5 below the ground state asymptote.