Macroscopic phenomena caused by high dose MeV energy He, Ne and Ar implantation

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5 Citations (Scopus)

Abstract

High dose implantation of reaction product MeV energy a particles into the construction elements of future controlled thermonuclear reactors might lead to serious problems. Among others the material suffers from swelling, large mechanical stresses develop in it and the bubbles into which the He gas accumulates weaken the material. When the interbubble material breaks, a layer will be separated and the specimen will show macroscopic surface deformations. An alternative process is when the implanted layer becomes mechanically unstable under the built up compressive mechanical stress and becomes rippled without separating from the bulk. Radiation damage, creep and sputtering enhanced by other particles coming from the active zone lead to further complications. Extensive research was devoted in our laboratory to explore and understand the above mentioned processes. 4He + ions from a 5 MeV Van de Graaff accelerator were applied to simulate α particles. Simultaneous radiation damage, creep and sputtering was simulated by heavier noble gas ions. A special technique was developed to perform quasi-simultaneous multiple energy implantation. A short insight into the achieved results will be given.

Original languageEnglish
Pages (from-to)377-383
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume62
Issue number3
DOIs
Publication statusPublished - Jan 2 1992

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Ion implantation
implantation
Radiation damage
radiation damage
dosage
Sputtering
Creep
sputtering
Van de Graaff accelerators
Ions
Noble Gases
Fusion reactors
Inert gases
Reaction products
swelling
reaction products
Swelling
energy
rare gases
ions

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Instrumentation
  • Surfaces and Interfaces

Cite this

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abstract = "High dose implantation of reaction product MeV energy a particles into the construction elements of future controlled thermonuclear reactors might lead to serious problems. Among others the material suffers from swelling, large mechanical stresses develop in it and the bubbles into which the He gas accumulates weaken the material. When the interbubble material breaks, a layer will be separated and the specimen will show macroscopic surface deformations. An alternative process is when the implanted layer becomes mechanically unstable under the built up compressive mechanical stress and becomes rippled without separating from the bulk. Radiation damage, creep and sputtering enhanced by other particles coming from the active zone lead to further complications. Extensive research was devoted in our laboratory to explore and understand the above mentioned processes. 4He + ions from a 5 MeV Van de Graaff accelerator were applied to simulate α particles. Simultaneous radiation damage, creep and sputtering was simulated by heavier noble gas ions. A special technique was developed to perform quasi-simultaneous multiple energy implantation. A short insight into the achieved results will be given.",
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