Electron Attachment to a Negative Ion: e+C{sub 84}{sup -}{r_equilibrium}C{sub 84}{sup -2}

Journal Article · Sun Jun 01 04:00:00 EDT 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.78.4367· OSTI ID:548839

Compton, R N; Tuinman, A A ^[1]; Compton, R N ^[2]; Compton, R N; Klots, C E ^[3]; Pederson, M R; Patton, D C ^[4]

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1. Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996 (United States)
2. Department of Physics, The University of Tennessee, Knoxville, Tennessee 37996 (United States)
3. Chemical Physics Section, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6125 (United States)
4. Naval Research Laboratory, Washington, D.C. 20375-5345 (United States)

The observation of sequential attachment of two electrons to the C{sub 84} molecule and the subsequent autodetachment of the C{sub 84} dianion is reported. Remarkably, the cross section for attaching the second electron is estimated to be of the same order as that for adding the first electron. The measured lifetime for autodetachment of C{sub 84}{sup -2} ({approximately}60{mu}sec) is in accord with calculations assuming {open_quotes}thermionic emission{close_quotes} from the vibrationally hot dianion. The first (EA{sub 1}) and second (EA{sub 2}) electron affinities of the two low-lying D{sub 2} and D{sub 2d} isomers of C{sub 84} are calculated using density functional theory to be +3.14 and +0.44eV , respectively. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 548839
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 23 Vol. 78; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
AFFINITY
ANIONS
CROSS SECTIONS
ELECTRON ATTACHMENT
FULLERENES
ISOMERS
MULTICHARGED IONS
THERMIONIC EMISSION