Ionization of atoms in the tunnelling regime with experimental evidence using Hg atoms (original) (raw)

Tunnelling ionization of atoms has been widely discussed and understood through various experimental results. This paper presents new evidence from experiments conducted on the ionization of mercury atoms using CO2 laser radiation, emphasizing the role of the adiabaticity parameter in defining the tunnelling regime more precisely. The findings reconcile previous disparities between tunnelling and multiphoton ionization interpretations, thereby advancing the understanding of ionization processes in atomic physics.