Characterization of Vacancy Defects in Carbon Ion Irradiated Graphite Using Positrons

Journal Article · Fri Jul 15 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3606335· OSTI ID:21608135

Anto, C Varghese; Arunkumar, J; Rajaraman, R; Nair, K G. M.; Amarendra, G ^[1]

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1. Materials Physics Division, Indira Gandhi Centre for Atomic Research, Kalpakkam-603102, T.N (India)

Highly Oriented Pyrolytic Graphite samples are irradiated with 200 keV Carbon ions to fluences of 10{sup 14} and 10{sup 15} C{sup +} ions/cm{sup 2}. Depth resolved Doppler lineshape S-parameter exhibited large increase in peak damage regions of the sample, indicating the existence of irradiation induced vacancy defects. The depth profile of the defect region has been deduced from the analysis of the experimental data. It is found that divacancies are the dominant defects in the irradiated samples.

• OSTI ID: 21608135
• Journal Information: AIP Conference Proceedings, Vol. 1349, Issue 1; Conference: 55. DAE solid state physics symposium 2010, Manipal (India), 26-30 Dec 2010; Other Information: DOI: 10.1063/1.3606335; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
CARBON IONS
CRYSTALS
GRAPHITE
ION BEAMS
IRRADIATION
KEV RANGE
PHYSICAL RADIATION EFFECTS
POSITRONS
VACANCIES
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BEAMS
CARBON
CHARGED PARTICLES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FERMIONS
IONS
LEPTONS
MATTER
MINERALS
NONMETALS
POINT DEFECTS
RADIATION EFFECTS