Energy distributions of the reaction products from graphite and B(4)C during energetic oxygen impactFunded under: EAEC-FUSION 12C
Time-of-flight experiments were performed to determine the energy distribution of various reaction products released from graphite and from B(4)C during 1.5 keV O(+) impact. CO is released in a thermal energy distribution (corresponding to the target temperature) and a temperature-independent molecule sputtering distribution which can be fitted by a Thompson distribution with an effective surface binding energy of 0.25 eV. At room temperature, the ratio of sputtered CO to thermally released CO amounts to 0.66. In contrast, CO(2) is only released thermally. Various boron oxides (BO, BO(2), B(2)O(2), B(2)O(3)) are released from B(4)C. At room temperature, their energy distributions can be fitted by Thompson distributions with effective surface binding energies between 0.12 and 0.28 eV. With increasing temperature an additional thermal distribution appears.
Bibliographic Reference: Article: Journal of Nuclear Materials, Vols. 220-222 (1995) pp. 249-253
Record Number: 199510890 / Last updated on: 1995-08-10
Original language: en
Available languages: en