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Title: Response of helium bubbles in gold to displacement-cascade damage

Abstract

Evolution of He bubbles in Au has been followed with {ital in} {ital situ} electron microscopy during 400 keV Ar ion irradiation at 500 K. He bubbles were produced by implantation at 500 K of 3 keV He ions into prethinned Au samples that were then annealed to 670 K. During Ar irradiation, bubbles undergo athermal migration, coalescence, and disintegration. The bubbles after annealing were underpressurized, but Ar irradiation brought the bubbles to equilibrium pressure after a dose of 0.6 displacements per atom (dpa). Bubble behavior can be understood on the basis of their interactions with adjacent cascades. We propose that a discrete bubble jump is induced by the melt zone formed during the thermal spike phase of a contiguous cascade. The rate of bubble migration is modeled with the assumption that the jump distance is determined by the bubble and cascade volumes.

Authors:
 [1];  [2];  [3];  [1]
  1. Joule Laboratory, Science Research Institute, University of Salford, M5 4WT (United Kingdom)
  2. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  3. Laboratoire de Metallurgie Physique, Universite of Poitiers, 40 Avenue du Recteur Pineau, 86022 Poitiers Cedex (France)
Publication Date:
OSTI Identifier:
90494
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter
Additional Journal Information:
Journal Volume: 52; Journal Issue: 6; Other Information: PBD: 1 Aug 1995
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; HELIUM; BUBBLES; GOLD; ELECTRON MICROSCOPY; ION BEAMS; ARGON IONS; KEV RANGE; MIGRATION

Citation Formats

Donnelly, S E, Birtcher, R C, Templier, C, and Vishnyakov, V. Response of helium bubbles in gold to displacement-cascade damage. United States: N. p., 1995. Web. doi:10.1103/PhysRevB.52.3970.
Donnelly, S E, Birtcher, R C, Templier, C, & Vishnyakov, V. Response of helium bubbles in gold to displacement-cascade damage. United States. doi:10.1103/PhysRevB.52.3970.
Donnelly, S E, Birtcher, R C, Templier, C, and Vishnyakov, V. Tue . "Response of helium bubbles in gold to displacement-cascade damage". United States. doi:10.1103/PhysRevB.52.3970.
@article{osti_90494,
title = {Response of helium bubbles in gold to displacement-cascade damage},
author = {Donnelly, S E and Birtcher, R C and Templier, C and Vishnyakov, V},
abstractNote = {Evolution of He bubbles in Au has been followed with {ital in} {ital situ} electron microscopy during 400 keV Ar ion irradiation at 500 K. He bubbles were produced by implantation at 500 K of 3 keV He ions into prethinned Au samples that were then annealed to 670 K. During Ar irradiation, bubbles undergo athermal migration, coalescence, and disintegration. The bubbles after annealing were underpressurized, but Ar irradiation brought the bubbles to equilibrium pressure after a dose of 0.6 displacements per atom (dpa). Bubble behavior can be understood on the basis of their interactions with adjacent cascades. We propose that a discrete bubble jump is induced by the melt zone formed during the thermal spike phase of a contiguous cascade. The rate of bubble migration is modeled with the assumption that the jump distance is determined by the bubble and cascade volumes.},
doi = {10.1103/PhysRevB.52.3970},
journal = {Physical Review, B: Condensed Matter},
number = 6,
volume = 52,
place = {United States},
year = {1995},
month = {8}
}