] dark state is also given in Table . We can see that the lifetimes of these autoionizing Rydberg states are strongly affected by the orbital angular momentum, with the 𝑑𝜎 𝑔 being much longer lived than the 𝑠𝜎 𝑔 at approximately the same energy. The 𝑝𝜎 𝑢 state has an intermediate lifetime, although the specific state given with 𝑛 = 3 would be expected to have a longer lifetime than the corresponding 𝑝𝜎 𝑢 states with energies similar to the 𝑠𝜎 𝑔 and 𝑑𝜎 𝑔 states considered here.