Coulomb energy contribution to the excitation energy in ${}^{229}$Th and enhanced effect of $\alpha$ variation

V. V. Flambaum, N. Auerbach, V. F. Dmitriev

We calculated the contribution of Coulomb energy to the spacing between the ground and first excited state of ${}^{229}$Th nucleus as a function of the deformation parameter $\delta$. We…