Abstract
The fragmentation of acetone following excitation in the region of the oxygen K edge was studied by time-of-flight mass spectroscopy. By comparing mass spectra obtained using various photon energies ranging from below to well above the threshold for oxygen 1s excitation, it is found that methyl ion production is strongly associated with excitation of an oxygen 1s electron. None of the excitations generated significant yields of atomic oxygen or carbon ions.
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