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Updated: Oct 14, 2025

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
Pulsed-ramped-field-ionization zero-kinetic-energy photoelectron spectroscopy: a methodological advance
Oliver J Harper1, Ning L Chen1, Séverine Boyé-Péronne1
1Institut des Sciences Moléculaires d'Orsay, CNRS, Université Paris-Saclay, 91405 Orsay, France. berenger.gans@universite-paris-saclay.fr.
Abstract:
A new experimental method has been developed to record photoelectron spectra based on the well-established pulsed-field-ionization zero-kinetic-energy photoelectron spectroscopy technique and inspired by the data treatment employed in slow photoelectron spectroscopy. This method has been successfully applied to two well-known systems: the X+2Πg,1/2(v+ = 0) ← X1Σ+g(v = 0) and the X+1Σ+(v+ = 2) ← X2Π1/2(v = 0) ionizing transitions of CO2 and NO, respectively. The first results highlight several advantages of our technique such as an improved signal-to-noise ratio without degrading the spectral resolution and a direct field-free energy determination. The data obtained for NO indicate that this method might be useful for studying field-induced autoionization processes.
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