Characterization of reduced Graphene oxide films used as stripper foils in a 3.0-Mv Tandetron

0510340 - ÚJF 2020 RIV GB eng J - Journal Article
Torrisi, L. - Havránek, Vladimír - Cutroneo, Mariapompea - Macková, Anna - Silipigni, L. - Torrisi, Alfio
Characterization of reduced Graphene oxide films used as stripper foils in a 3.0-Mv Tandetron.
Radiation Physics and Chemistry. Roč. 165, č. 12 (2019), č. článku 108397. ISSN 0969-806X. E-ISSN 1879-0895
R&D Projects: GA ČR(CZ) GBP108/12/G108; GA MŠMT LM2015056
Institutional support: RVO:61389005
Keywords : ion stripper * reduced graphene oxide * graphite * Tandetron * ion beam
OECD category: Nuclear physics
Impact factor: 2.226, year: 2019
Method of publishing: Limited access
https://doi.org/10.1016/j.radphyschem.2019.108397

Reduced graphene oxide (rGO) films can be employed as thin ion strippers in an accelerator. They show some advantages with respect to the graphite foils, due to their high thermal and electrical conductivities, low density, high mechanical resistance and high stability. The preparation method of the graphene-based films and their physical characterization are presented and discussed. Thin graphene oxide (GO) films with a thickness of from 0.5 up to 2.0 mu m have been synthesized and studied to be used as an ion extractor (stripper) in the 3.0 MV Tandetron of the CANAM Laboratory at the Nuclear Physics Institute in Rez, Czech Republic. GO is transformed to rGO also by low ion beam doses. Measurements of stripper efficiency, as the ion transmission factor of films, have been carried out by accelerating different ions, from helium to carbon, having energies from 1.0 up to 16 MeV, and by using different charge states and a current density ranging between about 10 nA/cm(2) and 2 mu A/cm(2). The ion fluence at which the so-obtained graphene oxide films can be undergone exceeds a dose of 1 x 10(16) particles/cm(2). Furthermore, these stripper films have demonstrated a significantly high charge production, comparable to that of the graphite films. However, the higher mechanical resistance represents an undiscussed advantage with respect to the graphite films.
Permanent Link: http://hdl.handle.net/11104/0300854