Answers are grounded in this paper and cite their sources.
Spectroscopy of photoelectrons produced by strontium atoms irradiated by strong picosecond laser pulses reveals excited states of Sr⁺ and, for the first time, electrons from stepwise double ionization. Different threshold behaviors are observed for these transitions.
No takes yet. Share an insight, caveat, or question.
Agostini et al. (1985) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: