Partial cation and anion-yield experiments in ammonia around the N 1s ionization threshold

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Abstract

We report partial cation and anion-yield measurements around the N K edge in isolated ammonia molecules. Due to the dominance of spectator electronic decay following Rydberg excitations, fragmentation was found to be more extensive following excitation to intermediate states of Rydberg character compared to excitation of states with molecular-orbital character. Unusual stability of the NH32+ fragment produced directly above threshold by normal-Auger decay is attributed to a stable planar geometry induced by a specific electronic configuration. Hydrogen anions are not detected above threshold except following the decay of resonant doubly excited neutral states embedded in the K-shell ionization continuum.

Detaljer

Författare
  • M. N. Piancastelli
  • R. Guillemin
  • W. C. Stolte
  • Denis Céolin
  • D. W. Lindle
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Fysik
  • Naturvetenskap

Nyckelord

Originalspråkengelska
Sidor (från-till)86-90
TidskriftJournal of Electron Spectroscopy and Related Phenomena
Volym155
Utgåva nummer1-3
StatusPublished - 2007
PublikationskategoriForskning
Peer review utfördJa