Journal article

Publication year: 2017

Journal: Physical review A

Volume number: 95

Issue number: 5

ISSN: 2469-9926

eISSN: 2469-9934

Open access status: Green

DOI Link: https://doi.org/10.1103/PhysRevA.95.053412

Publisher: American Physical Society

Abstract: 
Absolute cross-section measurements are reported for single photoionization of C-n(+) 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 C-n(+) molecular ions with a beam of monochromatized synchrotron radiation and measuring the yield of C-n(2+) 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. The highest-energy resonance in the data near 46 eV is similar to that previously observed in single photoionization of C-60 and may be attributable to a harmonic of the dominant surface-plasmon resonance near 23 eV.

Harvard Citation style: Thomas, C., Baral, K., Aryal, N., Habibi, M., Esteves-Macaluso, D., Kilcoyne, A., et al. (2017) Cross sections for photoionization of fullerene molecular ions C_n⁺ with n=40, 50, 70, 76, 78, and 84, Physical review A, 95(5), Article 053412. https://doi.org/10.1103/PhysRevA.95.053412

APA Citation style: Thomas, C., Baral, K., Aryal, N., Habibi, M., Esteves-Macaluso, D., Kilcoyne, A., Aguilar, A., Schlachter, A., Schippers, S., Mueller, A., & Phaneuf, R. (2017). Cross sections for photoionization of fullerene molecular ions C_n⁺ with n=40, 50, 70, 76, 78, and 84. Physical review A. 95(5), Article 053412. https://doi.org/10.1103/PhysRevA.95.053412