photoionitation of H2

djelovin

How come that in photoionitation of H2 molecule we have multiple (>2) ionization thresholds? Is there any good literature on this matter?

Claude Bile

Because electrons can occupy more than 1 state.

Each state has its own ionization threshold.

Claude.

djelovin

Thanks tor answer Claude!

wglab

If you are referring to the multiple low energy ionization limits, they are due to the excitation of one electron to threshold, along with vibrational and/or rotational excitation of the resulting ion core.

djelovin

In fact I was referring to doubly excited resonant states!