Investigations into the fragmentation and ionization of highly excited La@C-82
Artikel i vetenskaplig tidskrift, 2002

We report the first measurements of delayed ionization of the metallofullerene La@C-82. When highly excited in laser desorption, La@C-82 was found to ionize over several microseconds. The rate of delayed ionization of La@C-82 was compared to C-60 under the same extraction conditions, and found to be significantly different. A theoretical model was used for the fitting of the ion signal of the two fullerenes. The metallofullerene results can be fitted well over a time window <30 mus and are consistent with a low ionization potential (6.3 eV) and a high radiative cooling rate. The C-60 data cannot be fitted over the same time window, indicative of an additional time-dependent competing decay channel. (C) 2002 American Institute of Physics.

DELAYED IONIZATION

PHOTOFRAGMENTATION

CARBON

C-60

BINDING-ENERGY

ENDOHEDRAL FULLERENES

ATOM

THERMIONIC EMISSION

MECHANISM

Författare

Andreas Lassesson

Chalmers, Institutionen för experimentell fysik

Kirsten Mehlig

Göteborgs universitet

Andrei Gromov

Göteborgs universitet

A. Taninaka

H. Shinohara

Eleanor E B Campbell

Göteborgs universitet

Journal of Chemical Physics

0021-9606 (ISSN) 1089-7690 (eISSN)

Vol. 117 21 9811-9817

Ämneskategorier

Fysik

Atom- och molekylfysik och optik

DOI

10.1063/1.1513465