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Structural and spectroscopic investigations on graphene oxide foils irradiated by ion beams for dosimetry application

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    0542671 - ÚJF 2022 RIV GB eng J - Journal Article
    Manno, D. - Serra, A. - Buccolieri, A. - Calcagnile, L. - Cutroneo, Mariapompea - Torrisi, A. - Silipigni, L. - Torrisi, L.
    Structural and spectroscopic investigations on graphene oxide foils irradiated by ion beams for dosimetry application.
    Vacuum. Roč. 188, JUN (2021), č. článku 110185. ISSN 0042-207X. E-ISSN 1879-2715
    Institutional support: RVO:61389005
    Keywords : graphene oxide * Raman spectroscopy * X-Ray diffraction * Transmission Electron Microscopy
    OECD category: Coating and films
    Impact factor: 4.110, year: 2021
    Method of publishing: Limited access
    https://doi.org/10.1016/j.vacuum.2021.110185

    Different ion beams, from protons up to gold ions, with energy from 2 MeV up to 16 MeV, have been employed to irradiate graphene oxide (GO) foils in vacuum. The ion energy deposition reduces GO releasing functional oxygen groups. The effect of radiating ions - GO foils interaction has been investigated by Raman spectroscopy, X-Ray Diffraction (XRD) and Transmission Electron Microscopy (TEM). All the performed analyses show that both reduction and damaging depend on the fluence, the energy and the type of radiating ions. In the regime of electron stopping power the reduction is linearly dependent on the absorbed dose, while in the regime of nuclear stopping power an intense damage is produced in GO, altering the Raman spectrum and producing defects and amorphization of the material. The achieved goal was to quantify the GO' s response to ionizing radiation with the aim of using the GO foil as a dosimeter for high energy ion beams.
    Permanent Link: http://hdl.handle.net/11104/0320046

     
     
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