Mechanical defects and exoelectron emission from alpha alumina single crystals

Mechanical defects and exoelectron emission from alpha alumina single crystals

Thermally stimulated exoelectron emission (TSEE) from a alumina single crystals is studied. Polished as well as stamped surfaces present almost identical TSEE effects. Nevertheless a special peak at 440°C appears in the glow curve of stamped samples only. Microscopical observations provide evidence...

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Veröffentlicht in:Radiation protection dosimetry 1983, Vol.4 (3-4), p.240-242
Hauptverfasser: Thomas, Gérard, Ingrain, Dominique
Format: Artikel
Sprache:eng
Schlagworte:
Chemical and Process Engineering
Engineering Sciences
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Zusammenfassung:Thermally stimulated exoelectron emission (TSEE) from a alumina single crystals is studied. Polished as well as stamped surfaces present almost identical TSEE effects. Nevertheless a special peak at 440°C appears in the glow curve of stamped samples only. Microscopical observations provide evidence of a relation between the appearance of this peak and fragmentation or crack propagation around the marks made on the surface.
ISSN:0144-8420
1742-3406
DOI:10.1103/PhysRev.132.563