Published June 14, 2004
| Version v1
Journal article
Observation of an excited C2-4 ion
Creators
- 1. Department of Physics, Chalmers University of Technology/Goeteborg University, S 412 96 Goeteborg (Sweden)
- 2. Department of Physics, Stockholm University, AlbaNova, S 106 91 Stockholm (Sweden)
- 3. Department of Physics, Royal Institute of Technology, AlbaNova, S 106 91 Stockholm (Sweden)
- 4. Physics Department, Queen's University Belfast, Belfast BT7 1NN, UK (United Kingdom)
- 5. LCAR UMR 5589, Universite Paul Sabatier-Toulouse III, 118 route de Narbonne, Bat. III R1B4, 31062 Toulouse, Cedex 4 (France)
- 6. Department of Physics, University of Tennessee, Knoxville, TN 37996, USA (United States)
- 7. Department of Physics and Astronomy, Denison University, Granville, OH 43023, USA (United States)
- 8. Manne Siegbahn Laboratory, Frescativaegen 24, S 104 05 Stockholm (Sweden)
Description
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
Availability note (English)
Available online at http://stacks.iop.org/0953-4075/37/2241/b4_11_002.pdf or at the Web site for the Journal of Physics. B, Atomic, Molecular and Optical Physics (ISSN 1361-6455) http://www.iop.org/Additional details
Identifiers
- URL
- http://stacks.iop.org/0953-4075/37/2241/b4_11_002.pdf; http://www.iop.org/;
- DOI
- 10.1088/0953-4075/37/11/002;
- PII
- S0953-4075(04)76860-1;
Publishing Information
- Journal Title
- Journal of Physics. B, Atomic, Molecular and Optical Physics
- Journal Volume
- 37
- Journal Issue
- 11
- Journal Page Range
- p. 2241-2246
- ISSN
- 0953-4075
- CODEN
- JPAPEH
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 35068997
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Descriptors DEI
- ANIONS; ATOMIC CLUSTERS; CARBON; CROSS SECTIONS; DECAY; ELECTRON-ION COLLISIONS; ELECTRONS; EXCITED STATES; GROUND STATES; ION BEAMS; MOLECULAR IONS; MULTICHARGED IONS; RESONANCE; STORAGE RINGS
- Descriptors DEC
- BEAMS; CHARGED PARTICLES; COLLISIONS; ELECTRON COLLISIONS; ELEMENTARY PARTICLES; ELEMENTS; ENERGY LEVELS; FERMIONS; ION COLLISIONS; IONS; LEPTONS; NONMETALS