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Title: Surface effects on the radiation response of nanoporous Au foams

Abstract

We report on an experimental and simulation campaign aimed at exploring the radiation response of nanoporous Au (np-Au) foams. We find different defect accumulation behavior by varying radiation dose-rate in ion-irradiated np-Au foams. Stacking fault tetrahedra are formed when np-Au foams are irradiated at high dose-rate, but they do not seem to be formed in np-Au at low dose-rate irradiation. A model is proposed to explain the dose-rate dependent defect accumulation based on these results.

Authors:
; ; ; ;  [1];  [2];  [3];  [4]
  1. Materials Science in Radiation and Dynamics Extremes, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
  2. Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
  3. CONICET and Instituto de Ciencias Basicas, Universidad Nacional de Cuyo, Mendoza 5500 (Argentina)
  4. Nebraska Center for Energy Sciences Research, University of Nebraska-Lincoln, Lincoln, Nebraska 68508 (United States)
Publication Date:
OSTI Identifier:
22089505
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 101; Journal Issue: 19; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BEAMS; CRYSTAL DEFECTS; DOSE RATES; GOLD IONS; IRRADIATION; METALS; RADIATION DOSES; SIMULATION; STACKING FAULTS; SURFACES

Citation Formats

Fu, E. G., Caro, M., Wang, Y. Q., Baldwin, K., Caro, A., Zepeda-Ruiz, L. A., Bringa, E., and Nastasi, M. Surface effects on the radiation response of nanoporous Au foams. United States: N. p., 2012. Web. doi:10.1063/1.4764528.
Fu, E. G., Caro, M., Wang, Y. Q., Baldwin, K., Caro, A., Zepeda-Ruiz, L. A., Bringa, E., & Nastasi, M. Surface effects on the radiation response of nanoporous Au foams. United States. doi:10.1063/1.4764528.
Fu, E. G., Caro, M., Wang, Y. Q., Baldwin, K., Caro, A., Zepeda-Ruiz, L. A., Bringa, E., and Nastasi, M. Mon . "Surface effects on the radiation response of nanoporous Au foams". United States. doi:10.1063/1.4764528.
@article{osti_22089505,
title = {Surface effects on the radiation response of nanoporous Au foams},
author = {Fu, E. G. and Caro, M. and Wang, Y. Q. and Baldwin, K. and Caro, A. and Zepeda-Ruiz, L. A. and Bringa, E. and Nastasi, M.},
abstractNote = {We report on an experimental and simulation campaign aimed at exploring the radiation response of nanoporous Au (np-Au) foams. We find different defect accumulation behavior by varying radiation dose-rate in ion-irradiated np-Au foams. Stacking fault tetrahedra are formed when np-Au foams are irradiated at high dose-rate, but they do not seem to be formed in np-Au at low dose-rate irradiation. A model is proposed to explain the dose-rate dependent defect accumulation based on these results.},
doi = {10.1063/1.4764528},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 19,
volume = 101,
place = {United States},
year = {2012},
month = {11}
}