Simultaneous 3D coincidence imaging of cationic, anionic, and neutral photo-fragments

Abhishek Shahi, Yishai Albeck, Daniel Strasser

Research output: Contribution to journalArticlepeer-review


We present the design and simulations of a 3D coincidence imaging spectrometer for fast beam photofragmentation experiments. Coincidence detection of cationic, neutral, and anionic fragments involves spectrometer aberrations that are successfully corrected by an analytical model combined with exact numerical simulations. The spectrometer performance is experimentally demonstrated by characterization of four different channels of intense 800 nm pulse interaction with F2-: F- + F photodissociation, F + F dissociative photodetachment, F+ + F dissociative ionization, and F+ + F+ coulomb explosion. Improved measurement of F2- photodissociation with a 400 nm photon allows a better determination of the F2- anion dissociation energy, 1.256 ± 0.005 eV.

Original languageAmerican English
Article number013303
JournalReview of Scientific Instruments
Issue number1
StatePublished - Jan 2018

All Science Journal Classification (ASJC) codes

  • Instrumentation


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