Dissociation energy of the hydrogen molecule at 10${}^{-9}$ accuracy

C. Cheng, J. Hussels, M. Niu +11

The ionization energy of ortho-H${}_2$ has been determined to be $E_{\mathrm{I}}^{\mathrm{o}}({\mathrm{H}}_2)/(hc)=124357.238062(25)$ cm${}^{-1}$ from measurements of the GK(1,1)--X(0,1)…