\b[<inverse photoemission spectroscopy> is appropriate:] the fitted minimum lies above the <Fermi level>, so the state is unoccupied in equilibrium. Injection of <electrons> followed by <photon> emission probes unoccupied states. Ordinary ultraviolet photoemission removes <electrons> from occupied states and cannot map this empty minimum without an additional population mechanism.

Solution

Past exam of the chemistry course of the year 4 of the natural sciences course of the University of Cambridge / 2022 / Paper 3 / Section B / 39 / b / Solution

 Solution (source code)