Blister formation at subcritical doses in tungsten irradiated by MeV protons
| Autor: | I. Gavish Segev, Eyal Yahel, Guy Makov, I. Silverman |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Physics::Instrumentation and Detectors Analytical chemistry Flux chemistry.chemical_element Tungsten 01 natural sciences Fluence 010305 fluids & plasmas Physics::Fluid Dynamics 0103 physical sciences Critical threshold medicine General Materials Science Irradiation Nuclear Experiment 010306 general physics Astrophysics::Galaxy Astrophysics Range (particle radiation) Radiochemistry Blisters Nuclear Energy and Engineering chemistry Physics::Accelerator Physics medicine.symptom Order of magnitude |
| Zdroj: | Journal of Nuclear Materials. 496:77-84 |
| ISSN: | 0022-3115 |
| Popis: | The material response of tungsten to irradiation by MeV protons has been studied experimentally, in particular with respect to bubble and blister formation. Tungsten samples were irradiated by 2.2 MeV protons at the Soreq Applied Research Accelerator Facility (SARAF) to doses of the order of 1017 protons/cm2 which are below the reported critical threshold for blister formation derived from keV range irradiation studies. Large, well-developed blisters are observed indicating that for MeV range protons the critical threshold is at least an order of magnitude lower than the lowest value reported previously. The effects of fluence, flux, and corresponding temperature on the distribution and characteristics of the obtained blisters were studied. FIB cross sections of several blisters exposed their depth and structure. |
| Databáze: | OpenAIRE |
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