Surface effects on the radiation response of nanoporous Au foams

E. G. Fu; L. A. Zepeda-Ruiz; Y. Q. Wang; K. Baldwin; E. Bringa; M. Nastasi; A. Caro; M. Caro

doi:10.1063/1.4764528

Surface effects on the radiation response of nanoporous Au foams

E. G. Fu
, L. A. Zepeda-Ruiz
, Y. Q. Wang
, K. Baldwin
, E. Bringa
, M. Nastasi
, A. Caro
, M. Caro

Los Alamos National Laboratory

Research output: Contribution to journal › Article › peer-review

83 Scopus citations

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.

Original language	English
Article number	191607
Journal	Applied Physics Letters
Volume	101
Issue number	19
DOIs	https://doi.org/10.1063/1.4764528
State	Published - Nov 5 2012

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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.",

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AU - Fu, E. G.

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AU - Bringa, E.

AU - Nastasi, M.

AU - Caro, A.

AU - Caro, M.

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AB - 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.

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Surface effects on the radiation response of nanoporous Au foams

Abstract

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