Highly oriented pyrolytic graphite (HOPG) samples were irradiated by Xe ions of initial kinetic energy of 3 MeV/u. The irradiations were performed at temperatures of 500 and 800 K. Scanning tunneling microscopy (STM) images show that the tracks occasionally have elongated structures under high-temperature irradiation. The track creation yield at 800 K is by three orders of magnitude smaller compared to that obtained during room-temperature irradiation. STM and Raman spectra show that amorphization occurs in graphite samples irradiated at 500 K to higher fluences, but not at 800 K. The obtained experimental results clearly reveal that the irradiation under high temperature causes track annealing.
|ジャーナル||Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms|
|出版ステータス||Published - 2006 4|
|イベント||Proceedings of the Sixth International Symposium on Swift Heavy Ions in Matter (SHIM 2005) - |
継続期間: 2005 5 28 → 2005 5 31
ASJC Scopus subject areas
- Nuclear and High Energy Physics