Implantation of He+ in candidate fusion first wall materials
| Autor: | Gerald L. Kulcinski, R.F. Radel |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Nuclear and High Energy Physics
Chemistry Scanning electron microscope Magnetic confinement fusion chemistry.chemical_element Tungsten Nuclear physics Nuclear Energy and Engineering Powder metallurgy General Materials Science Irradiation Composite material Single crystal Helium Inertial electrostatic confinement |
| Zdroj: | Journal of Nuclear Materials. :434-439 |
| ISSN: | 0022-3115 |
| DOI: | 10.1016/j.jnucmat.2007.03.119 |
| Popis: | The effect of high temperature (700–1200 °C) implantation of helium in candidate fusion first wall materials was studied in the University of Wisconsin Inertial Electrostatic Confinement device. Powder metallurgy tungsten, single crystal tungsten, and a W–25% Re alloy were irradiated with 30–50 keV He+ ions. Scanning electron microscopy was used to evaluate changes in surface morphology for various ion fluences at temperature ranges comparable to first wall temperatures. Helium fluences in excess of 1 × 1018 He+/cm2 produce extensive pore formation at 1150 °C. These changes will have an impact on the lifetime of thin tungsten coatings on the first walls and divertors of inertial and magnetic confinement fusion reactors. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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