Observation of the radiative 2s02p6−2s12p5 transition in NeIII

Abstract Ion impact excited spectra of Ne contain a line at 52.82 nm which has been identified as resulting from the decay of double 2s vacancies in NeIII via the transition 2s 0 2p 6 ( 1 S 0 )−2s 1 2p 5 ( 1 P 1 ).