Observation of an excited C2-4 ion
Artikel i vetenskaplig tidskrift, 2004

This paper reports an experimental investigation of the electron impact detachment of C−4. We observe structure in the electron impact cross section for detaching a single electron from a C−4 cluster anion, which we attribute to the formation and decay of the C2−4 dianion. The system is energetically unstable and very rapidly decays via double autodetachment. The energy and width of the resonance were determined to be 8.8(5) eV and 1.4(5) eV, respectively, and the resonance lies 1.5(5) eV above the ground state of the neutral system. The experiment was conducted by merging monoenergetic electron and ion beams in the heavy ion storage ring CRYRING. The detachment channel was monitored by detecting neutral C4 fragments.


Karin Fritioff

Göteborgs universitet

Joakim Sandström

Göteborgs universitet

Chalmers, Institutionen för experimentell fysik, Atomfysik

Pontus Andersson

Göteborgs universitet

Dag Hanstorp

Göteborgs universitet

F. Hellberg

Stockholms universitet

R Thomas

Stockholms universitet

M Larsson

Stockholms universitet

F Österdahl

Kungliga Tekniska Högskolan (KTH)

G. F. Collins

Queen's University Belfast

A. Le Padellec

Universite Paul Sabatier Toulouse III

D. J. Pegg

University of Tennessee

N. D. Gibson

Denison University

H Danared

Manne Siegbahn Laboratory

A Källberg

Manne Siegbahn Laboratory

Journal of Physics B: Atomic, Molecular and Optical Physics

0953-4075 (ISSN)

Vol. 37 11 2241-2246


Atom- och molekylfysik och optik



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