Determination of the electron affinity of iodine

Abstract

The electron affinity of atomic iodine has been determined to be 3.059 038(10) eV. A beam of negatively charged iodine ions was merged collinearly with a laser beam. The onset of the photodetachment process was observed when the wavelength of the laser was scanned, and the result was fitted according to the Wigner law in order to determine the photodetachment threshold. The wavelength was calibrated by simultaneously recording the atomic spectra of lead and manganese as well as the fringes from a Fabry-Perot reference etalon.

Electron attachment to 14 halogenated alkenes and alkanes, 300-600 K

“…The calculated EA of atomic iodine with this method is in good agreement with the experimental value. 26 These density functional results are included in the supplementary material. 25 TABLE II.…”

The electron affinity of tellurium

“…The potentially most accurate method to determine EA is the so called laser photodetachment threshold (LPT) method [6] in a collinear geometry. In more recent years we have applied this method to Iodine [7] to determine the EA and to Chlorine [8] where we measured both the EA and the isotope shift between 35 Cl − and 37 Cl − . In this paper we investigate the EA of Tellurium.…”

Resonance Structure in theLi−Photodetachment Cross Section

“…These conditions were achieved in the present experiment by the use of a collinear beam apparatus, described in detail elsewhere [14], in which a tenuous beam of Li − is superposed with a laser beam over a common path of about 50 cm (see Fig.1). …”