Eur. Phys. J. D 43, 65-68 (2007)
https://doi.org/10.1140/epjd/e2007-00097-5

Electron detachment of super-excited porphyrin anions in an electrostatic ion storage ring

Graduate School of Science, Tokyo Metropolitan University, Hachioji, 192-0397, Japan

Corresponding author: ^a shiromaru-haruo@c.metro-u.ac.jp

Received: 24 July 2006
Revised: 22 November 2006
Published online: 24 May 2007

Abstract

To study the photoexcitation and subsequent reactions of large molecular ions, anions of 5,10,15,20-tetraphenyl-21H,23H-porphine, which is a typical metal-free porphyrin, were produced and stored in an electrostatic ion storage ring at the Tokyo Metropolitan University. The circulating ions were merged using a pulsed laser, resulting in the production of super-excited anions, which eventually yielded neutral species. The decay profile deviated considerably from t^-1 behavior, depending on the laser fluence and excitation wavelength.