Cross sections for photoionization of fullerene molecular ions with = 40, 50, 70, 76, 78, and 84
- Univ. of Nevada, Reno, NV (United States)
- Univ. of Nevada, Reno, NV (United States); Univ. of Montana, Missoula, MT (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
- Justus-Liebig-Univ., Giessen (Germany)
Absolute cross-section measurements are reported for single photoionization of Cn+ fullerene molecular ions (n=40, 50, 70, 76, 78, and 84) in the photon-energy range 18-70 eV. The experiments were performed by merging a mass and charge selected beam of Cn+ molecular ions with a beam of monochromatized synchrotron radiation and measuring the yield of Cn2+ product ions as a function of the photon energy. Oscillator strengths determined by integrating the measured cross sections over this energy range exhibit a linear dependence on n. The cross sections are parametrized by fits to three Lorentzian functions to represent plasmon excitations and a linear function for direct ionization. Finally, the highest-energy resonance in the data near 46 eV is similar to that previously observed in single photoionization of C60 and may be attributable to a harmonic of the dominant surface-plasmon resonance near 23 eV.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); German Research Foundation (DFG)
- Grant/Contract Number:
- AC02-05CH11231; FG02-03ER15424; AC03-76SF0098; 1068/10; Mu 1068/22
- OSTI ID:
- 1604639
- Alternate ID(s):
- OSTI ID: 1358467
- Journal Information:
- Physical Review A, Vol. 95, Issue 5; ISSN 2469-9926
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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