Other Publications (1)
Articles by Justin Lyle in JoVE
Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F− Justin Lyle1, Sudharson Ravishankar Chandramoulee1, C. Annie Hart1, Richard Mabbs1 1Department of Chemistry, Washington University in St. Louis Here, we present a protocol for photoelectron imaging of anionic species. Anions generated in vacuo and separated by mass spectrometry are probed using velocity mapped photoelectron imaging, providing details of anion and neutral energy levels, anion and neutral structure and the nature of the anion electronic state.
Other articles by Justin Lyle on PubMed
Channel Branching Ratios in CHCN Photodetachment: Rotational Structure and Vibrational Energy Redistribution in Autodetachment The Journal of Chemical Physics. | Pubmed ID: 29272948 We report photoelectron spectra of CHCN, recorded at photon energies between 13 460 and 15 384 cm, which show rapid intensity variations in particular detachment channels. The branching ratios for various spectral features reveal rotational structure associated with autodetachment from an intermediate anion state. Calculations using equation-of-motion coupled-cluster method with single and double excitations reveal the presence of two dipole-bound excited anion states (a singlet and a triplet). The computed oscillator strength for the transition to the singlet dipole-bound state provides an estimate of the autodetachment channel contribution to the total photoelectron yield. Analysis of the different spectral features allows identification of the dipole-bound and neutral vibrational levels involved in the autodetachment processes. For the most part, the autodetachment channels are consistent with the vibrational propensity rule and normal mode expectation. However, examination of the rotational structure shows that autodetachment from the ν (v = 1 and v = 2) levels of the dipole-bound state displays behavior counter to the normal mode expectation with the final state vibrational level belonging to a different mode.