R
Raquel Giulian
Researcher at Universidade Federal do Rio Grande do Sul
Publications - 67
Citations - 1703
Raquel Giulian is an academic researcher from Universidade Federal do Rio Grande do Sul. The author has contributed to research in topics: Irradiation & Amorphous solid. The author has an hindex of 23, co-authored 65 publications receiving 1529 citations. Previous affiliations of Raquel Giulian include Australian National University.
Papers
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Journal ArticleDOI
Residual activity induced by ion bombardment on insulating samples
S.M. Shubeita,C.E.I. dos Santos,José Luiz Rybarczyk Filho,Raquel Giulian,Lindolfo Meira,P. B. R. Silva,L. Amaral,Johnny Ferraz Dias,Maria Lucia Yoneama +8 more
TL;DR: In this paper, the authors investigated the properties of the residual activity induced by protons impinging on quartz, mylar and other insulating materials and suggested a simple mechanism for this process.
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Swift heavy ion irradiation of Pt nanocrystals: I. shape transformation and dissolution
Raquel Giulian,Leandro Araujo,Patrick Kluth,David J. Sprouster,Claudia Schnohr,Aidan Byrne,Mark C Ridgway +6 more
TL;DR: In this article, the effects of heavy ion irradiation of embedded Pt nanocrystals (NCs) were investigated and it was shown that the shape transformation remains operative despite discontinuous ion tracks in the matrix and exhibits a constant threshold size for elongation.
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Ion irradiation-induced polycrystalline InSb foam
Raquel Giulian,J B Salazar,W Just,Danay J. Manzo,A.M.H. de Andrade,Julio R. Schoffen,Fabiano Bernardi,Daniel L. Baptista,Paulo Fernando Papaleo Fichtner +8 more
TL;DR: In this article, it was shown that amorphous InSb films become polycrystalline foams upon irradiation with 17 MeV Au+7 ions at fluences above 1014 cm−2.
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Structural characterization of Ge nanocrystals in silica amorphised by ion irradiation
Leandro Araujo,Raquel Giulian,Bernt Johannessen,David Llewellyn,Patrick Kluth,G. de M. Azevedo,David Cookson,Mark C Ridgway +7 more
TL;DR: In this article, the authors measured the size and depth distribution of embedded Ge nanocrystals in amorphous silica matrices and found that the embedded Ge NCs are rendered amomorphous at fluences ∼40 times lower than bulk crystalline Ge (c-Ge).
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Precipitate orientation relationships in Pt-implanted sapphire
Melissa K. Santala,Velimir Radmilovic,Raquel Giulian,Mark C Ridgway,Andreas M. Glaeser,Ronald Gronsky +5 more
TL;DR: Sapphire was implanted with Pt ions at room temperature and at liquid-nitrogen temperature, inducing correspondingly different amounts of accumulated damage in the target crystals as discussed by the authors, depending on whether Pt precipitated from sapphire or from a transition alumina phase that formed in partially amorphized substrates.