Decay channels following 1s photoexcitation of neon

Abstract
The decay channels after 1s to 3p and 1s to 4p excitation of Ne were studied by combining two experiments using (i) time-of-flight mass spectrometry and (ii) threshold electron-ion coincidence measurements. From the ion-yield spectra observed by these experiments, the decay channels for the 1s-13p resonance (two-step and resonant Auger shake-off) were estimated to be in the ratio 91%:9%; while for the 1s-14p resonance the ratio was 68%:32%. It is found that the two-step channel plays an important role in the decay of these resonances.