Figure 1
(a) Raman spectra, in the 1480–1455 cm−1 range, of 4 mg fullerene-doped samples after exposure to increasing X-rays doses: not-exposed (solid line), 1054 J cm−2 (dashed line), 2108 J cm−2 (dotted line) and 4215 J cm−2 (dash-dotted line). (b) Raman spectra of an undoped sample (solid line) and pure C60 (dotted line) in the 1480–1455 cm−1 range. |