119. The effect of sample size on the irradiation-induced contraction of nuclear graphite
โ Scribed by W.J Gray
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- English
- Weight
- 113 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0008-6223
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โฆ Synopsis
Measurements have been made on the concentrations of vacancies and interstitial clusters in singlecrystal graphite irradiated with neutrons in a reactor and with carbon ions in an accelerator. The irradiations were carried out over a range of temperatures from 30" to 1100ยฐC and a range of total initial displacements up to 0.1 disp/lattice site. Vacancies were observed using the gold decoration technique, and interstitial clusters were directly observed in the electron microscope. Comparisons will be made with calculated values.
Evolution des proprietk electroniques de carbones irradiks par des neutrons
๐ SIMILAR VOLUMES
The phenomenon of irradiation creep in graphite is essential to the design and construction of graphite-moderated reactors. Recent experimental results have shown large apparent reductions in creep rate for creep strains greater than ?I'%. It is shown that this is not a true reduction in creep rate,
The energy required to displace a carbon atom from its normal lattice site has been determined directly by detection of the lattice vacancies resulting from the displacement process. Annealed natural crystals of graphite containing less than 10-i' vacancies per carbon atom were irradiated at room te