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Title: Cascade collapse in copper and nickel

Abstract

In-situ TEM studies of the development of the damage structure produced by heavy ion irradiations have been performed in copper and nickel to investigate the possibility that melting occurs in local regions within displacement cascades. These experiments reveal that as the ion dose increases additional loops form from isolated displacement cascades, but more surprisingly some fo the pre-existing loops are annihilated, change position, size and/or Burgers vector. It was also found that the probability for loop formation and the defect image size are greater in copper than in nickel even at temperatures well below stage 3. It will be demonstrated that these observations provide supporting evidence, albeit indirect, that local melting occurs within the cascade core. These results will be compared to the molecular dynamic computer simulations of the damage created by low energy self-ions in copper and nickel. 15 refs., 4 figs.

Authors:
; ;  [1];  [2]
  1. Illinois Univ., Urbana, IL (USA). Dept. of Materials Science and Engineering
  2. Argonne National Lab., IL (USA)
Publication Date:
Research Org.:
Argonne National Lab., IL (USA)
Sponsoring Org.:
DOE/ER
OSTI Identifier:
7144610
Report Number(s):
CONF-900623-9
ON: DE90011115; TRN: 90-017250
DOE Contract Number:  
W-31109-ENG-38; AC02-76ER01198
Resource Type:
Conference
Resource Relation:
Conference: 15. symposium on effects of radiation on materials, Nashville, TN (USA), 17-21 Jun 1990
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COPPER; PHYSICAL RADIATION EFFECTS; NICKEL; CASCADE THEORY; COMPUTERIZED SIMULATION; CRYSTAL DEFECTS; DISLOCATIONS; ELECTRON MICROSCOPY; IRRADIATION; KRYPTON IONS; MELTING; CHARGED PARTICLES; CRYSTAL STRUCTURE; ELEMENTS; IONS; LINE DEFECTS; METALS; MICROSCOPY; PHASE TRANSFORMATIONS; RADIATION EFFECTS; SIMULATION; TRANSITION ELEMENTS; 360106* - Metals & Alloys- Radiation Effects; 360102 - Metals & Alloys- Structure & Phase Studies

Citation Formats

Vetrano, J S, Robertson, I M, Averback, R S, and Kirk, M A. Cascade collapse in copper and nickel. United States: N. p., 1990. Web.
Vetrano, J S, Robertson, I M, Averback, R S, & Kirk, M A. Cascade collapse in copper and nickel. United States.
Vetrano, J S, Robertson, I M, Averback, R S, and Kirk, M A. 1990. "Cascade collapse in copper and nickel". United States. https://www.osti.gov/servlets/purl/7144610.
@article{osti_7144610,
title = {Cascade collapse in copper and nickel},
author = {Vetrano, J S and Robertson, I M and Averback, R S and Kirk, M A},
abstractNote = {In-situ TEM studies of the development of the damage structure produced by heavy ion irradiations have been performed in copper and nickel to investigate the possibility that melting occurs in local regions within displacement cascades. These experiments reveal that as the ion dose increases additional loops form from isolated displacement cascades, but more surprisingly some fo the pre-existing loops are annihilated, change position, size and/or Burgers vector. It was also found that the probability for loop formation and the defect image size are greater in copper than in nickel even at temperatures well below stage 3. It will be demonstrated that these observations provide supporting evidence, albeit indirect, that local melting occurs within the cascade core. These results will be compared to the molecular dynamic computer simulations of the damage created by low energy self-ions in copper and nickel. 15 refs., 4 figs.},
doi = {},
url = {https://www.osti.gov/biblio/7144610}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {4}
}

Conference:
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