Precision measurement of the ionization energy of Cs I

Johannes Deiglmayr, Holger Herburger, Heiner Saßmannshausen +3

We present absolute-frequency measurements for the transitions from the 6s${}_{1/2}$ ground state of ${}^{133}$Cs to $n$p${}_{1/2}$ and $n$p${}_{3/2}$ Rydberg states. The transition freque…