Irradiation effects of graphene and thin layer graphite induced by swift heavy ions

Zeng Jian^a), Liu Jie†^a), Zhang Sheng-Xia^a),^b), Zhai Peng-Fei^a), Yao Hui-Jun^a), Duan Jing-Lai^a), Guo Hang^a),^b), Hou Ming-Dong^a), Sun You-Mei^a)

Raman spectra of thin graphite films of different thickness values irradiated by 1.2-GeV ²⁰⁹Bi with fluences of (a) 1.3 × 10¹¹ ions/cm²; (b) 6.5 × 10¹¹ ions/cm²; (c) 2.6 × 10¹² ions/cm².