Publications

 

  • W.M. Moslem, A.S. El-Said, R.E. Tolba, H. Bahlouli "Modifications of single walled carbon nanotubes by ion-induced plasma" Results in Physics 37, 105438 (2022).

  • Marcel Toulemonde, Walter Assmann, Brigitte Ban-d'Etat, Markus Bender, Andreas Bergmaier,Philippe Boduch, Serge Della Negra, Jinglai Duan, Ayman S. El-Said, Florian Gruner, Jie Liu, Daniel Lelievre, Hermann Rothard, Tim Seidl, Daniel Severin, Jean Paul Stoquert, Kay-Obe Voss, and Christina Trautmann, "Erratum to: Sputtering of LiF and other halide crystals in the electronic energy loss regime" ,The European Physical Journal D 74, 183 (2020).

  • S.A. Morsi, W.M. Moslem, A.S. El-Said, H. Bahlouli,  "Creation of surface nanometer-scale plasma region by irradiation with slow highly charged ions" Physica Scripta 95, 095602 (2020).

  • Ayman S. El-Said, Saleem Rao, Shavkat Akhmadaliev, Stefan Facsko,  "Tuning Tailored Single-Walled Carbon Nanotubes by Highly Energetic Heavy Ions"  Physical Review Applied 13, 044073 (2020).

  • Marcel Toulemonde, Walter Assmann, Brigitte Ban-d'Etat, Markus Bender, Andreas Bergmaier,Philippe Boduch, Serge Della Negra, Jinglai Duan, Ayman S. El-Said, Florian Gruner, Jie Liu, Daniel Lelievre, Hermann Rothard, Tim Seidl, Daniel Severin, Jean Paul Stoquert, Kay-Obe Voss, and Christina Trautmann,  "Sputtering of LiF and other halide crystals in the electronicenergy loss regime" European Physical Journal D 74, 144 (2020).

  • A.S. El-Said, R.A. Wilhelm, R. Heller, S. Facsko, "Creation of Surface Nanostructures in Lanthanum Fluoride Single Crystals by Irradiation with Slow Highly Charged Ions" Nuclear Instruments and Methods B  460, 137 (2019).

  • W.M. Moslem, A.S. El-Said, S.A. Morsi, R Sabry, S. K. El-Labany, H. Bahlouli "On the formation of nanostructures by inducing confined plasma expansion" Results in Physics 15, 102696 (2019).

  • Mourad Djebli, Amina Kiouche, Ayman S. El-Said, Hocine Bahlouli “On the formation of surface nanostructures induced by slow highly charged ions” Physics of Plasmas 24, 072115 (2017).

  • W.M. Moslem, A.S. El-Said, R. Sabry, A. Shalouf, S. K. El-Labany, H. Bahlouli “Nonlinear Phenomenon In Nanostructures Creation By Fast Cluster Ions” Physics Letters A 381, 102 (2017).

  • M.F. Al-Kuhaili, S.M.A. Durrani, A.S. El-Said, R. Heller, “Enhancement of the refractive index of sputtered zinc oxide thin films through doping with Fe2O3” Journal of Alloys and Compounds 690, 453 (2017).

  • A.S. El-Said, R. A. Wilhelm, R. Heller, M. Sorokin, S. Facsko, and F. Aumayr, “Tuning the Fabrication of Nanostructures by Low-Energy Highly Charged Ions” Physical Review Letters 117, 126101 (2016).

  • A.S. El-Said, R.A. Wilhelm, R. Heller, Sh. Akhmadaliev, E. Schumann, M. Sorokin, S. Fascko, C. Trautmann, “Modifications of gallium phosphide single crystals using slow highly charged ions and swift heavy ions” Nuclear Instruments and Methods B 382, 86 (2016).

  •  M.F. Al-Kuhaili, S.M.A. Durrani, A.S. El-Said, R. Heller, “Influence of iron doping on the structural, chemical, and optoelectronic properties of sputtered zinc oxide thin films” Journal of Materials Research 31, 3230 (2016).

  • Richard A. Wilhelm, Ayman S. El-Said, Franciszek Krok, Rene Heller, Elisabeth Gruber, Friedrich Aumayr, Stefan Facsko, "Highly charged ion induced nanostructures at surfaces by strong electronic excitations" Progress in Surface Science 90, 377 (2015).

  • A.S. El-Said, W.M. Moslem, M. Djebli "Surface Nanostructuring   By Ion-Induced Localized Plasma Expansion In Zinc Oxide " Applied Physics Letters 104, 231609 (2014).   

  • A.S. El-Said, R.A. Wilhelm, R. Heller, S. Facsko, F. Aumayr "Surface modifications of BaF2 and CaF2 single crystals by slow highly charged ions", Applied Surface Science 310,169 (2014).

  • M.V. Sorokin, K. Schwartz, C. Trautmann, A. Dauletbekova, A.S. El-Said "Modeling of defect accumulation in lithium fluoride crystals under irradiation with swift ions" Nuclear Instruments and Methods B 326, 307 (2014).

  • G. Wachter, K. Tökési, G. Betz, C. Lemell, J. Burgdörfer, A.S. El-Said, R.A. Wilhelm, R. Heller, S. Facsko, R. Ritter, F. Aumayr "Nano-structuring of CaF2 surfaces by slow highly charged ions: simulation and experiment" Journal of Physics: Conference Series 488, 132015 (2014).

  • A.S. El-Said, R.A. Wilhelm, R. Heller, R. Ritter, G. Wachter, S. Facsko, C. Lemell, J. Burgdörfer, F. Aumayr "Nanostructuring CaF2 surfaces with slow highly charged ions" Journal of Physics: Conference Series 488, 012002 (2014).

  • A.S. El-Said, R.A. Wilhelm, R. Heller, Sh. Akhmadaliev, S. Facsko " Creation of surface nanostructures in Al2O3 by slow highly charged ions "Nucl. Instr. and Meth. B 317, 170 (2013).

  • A.S. El-Said, R.A. Wilhelm, S. Facsko, C. Trautmann, “Surface nanostructuring of LiNbO3 single crystals by high-density electronic excitations" Nuclear Instruments and Methods B 315, 265 (2013).

  • W.M. Moslem, A.S. El-Said “Formation of surface nano-structures by plasma expansion induced by highly charged ions” Physics of Plasmas 19, 123510 (2012).

  • A.S. El-Said “ Nanostructures created in SiO2 surface: A comparison between the impingement by slow highly charged ions and by swift heavy ions“ Nucl. Instr. and Meth. B 282, 63 (2012).

  • A.S. El-Said, R.A. Wilhelm, R. Heller, and S. Facsko, C. Lemell, G. Wachter, J. Burgduorfer, R. Ritter and F. Aumayr "Phase Diagram for Nanostructuring CaF2 Surfaces by Slow Highly Charged Ions" Physical Review Letters 109, 117602 (2012).

  • R. Ritter, R. A. Wilhelm, R. Ginzel, G. Kowarik, R. Heller, A.S. El-Said, R. M. Papaléo, W. Rupp, J. R. Crespo Lòpez-Urrutia, J. Ullrich, S. Facsko and F. Aumayr “Pit formation on poly(methyl methacrylate) due to ablation induced by individual slow highly charged ion impact” Europhysics Letters, 97, 13001 (2012).

  • F. Aumayr, S. Facsko, A.S. El-Said, C. Trautmann. M. Schleberger " Singl- ion induced surface nanostructures: A comparison between slow highly-charged and swift heavy ions " J. Phys. condensed matter 2, 224012 (2011)

  • A.S. El-Said, R.A. Wilhelm, R. Heller, S. Facsko, C. Trautmann, F. Aumayr “Surface nanostructuring of SrTiO3 single crystals by slow highly charged ions and swift heavy ions“ Nuclear Instruments and Methods B 269, 1234 (2011).

  • T. El-Ashram, A. S. El-Said “Modifications induced by swift heavy ions in rapidly solidified Sn-8.5Sb-5.5Cu alloy” Rad. Eff. and Def. in Sol. 166, 272 (2011).

  • A.S. El-Said, R. Heller, S. Facsko, “Surface nanostructuring of BaF2 (111) surface by single highly charged ions, Nuclear Instruments and Methods B 269, 901 (2011).

  • A.S. El-Said, R. Heller, F. Aumayr, S. Facsko, "Pyramidal pits created by single highly charged ions impinging upon the BaF2 (111) surface". Physical  Review B 82, 033403 (2010).

  • R. Ritter, G. Kowarik, W. Meissl, A. S. El-Said, L. Maunoury, H. Lebius, C. Dufour, M. Toulemonde, F. Aumayr " Nanostructure formation due to impact of highly charged ions on mica" Vacuum 84, 1062 (2010).

  • R. Ginzel, S. G. Higgins, P. Mrowcynski, P. Northway, M. C. Simon, H. Tawara, J. Crespo López-Urrutia, J. Ullrich, G. Kowarik, R. Ritter, W. Meissl, C. Vasko, C. Gösselsberger, A.S. El-Said, F. Aumayr "A deceleration system at the Heidelberg EBIT providing very slow highly charged ions for surface nanostructuring " Nuclear Instruments and Methods B 268, 2972 (2010).

  • F. Aumayr, G. Kowarik, R. Ritter, C. A. Vasko, C. Gösselsberger, W. Meissl, A.S. El-Said "Surface nanostructures created by irradiation with slow highly charged ions" SASP 2010 (XVIIth Symposium on Atomic and Surface Physics), Obergurgel, Austria, editors: I. Milewski, A. Kendl and P. Scheier, Innsbruck University Press, Conf. Series, ISBN 978-3-902719-52-2, 74 (2010)

  • S. Facsko, R. Heller, W. Meissl, A.S. El-Said, G. Kowarik, R. Ritter, F. Aumayr " Nanostructures induced by highly charged ions on CaF2 and KBr " Journal of Physics: Conference Series 194, 012060 (2009).

  • W. Meissl, R. Ginzel, R. Heller, A.S. El-Said "Potential energy - induced nanostructuring of insulator surfaces by impact of slow, very highly charged ions" Journal of Physics: Conference Series 194, 132027 (2009).

  • S. Facsko, R. Heller, A.S. El-Said, W. Meissl, F. Aumayr " surface nanostructures by single highly charged ions " J. Phys. condensed matter 2, 224012 (2009).

  • A.S. El-Said "Tracks of 30-MeV C60 clusters in Yttrium Iron Garnet studied by Scanning force microscopy"Nuclear Instruments and Methods B 267, 953 (2009).

  • A.S. El-Said, R. Heller, W. Meissl, R. Ritter, S. Facsko, C. Lemell, B. Solleder, I. Gebeshuber, G. Betz, M. Toulemonde, W. Möller, J. Burgdörfer, F. Aumayr, "Creation of Nanohillocks on CaF2 Surfaces by Single Slow Highly Charged Ions" Physical Review Letters, 100, 237601 (2008)

  • F. Aumayr, A.S. El-Said, W. Meissl "Nano-sized surface modifications induced by the impact of slow highly charged ions-A first review " Nucl. Instr. and Meth. B 266, 2729 (2008).

  • A.S. El-Said, W. Meissl, M. Simon, J.R. Crespo López-Urrutia, I.C. Gebeshuber, J. Laimer, H.P. Winter, J. Ullrich , F. Aumayr, "Creation of surface nanostructures by irradiation with slow, highly charged ions". Rad. Eff. and Def. in Sol. 162, 467 (2007).

  • C. Lemell, A.S. El-Said, W. Meissl, I.C. Gebeshuber, C. Trautmann, M. Toulemonde, , J. Burgdörfer, F. Aumayr, "On the nano-hillock formation induced by slow highly charged ions on insulator surfaces" Solid-state electronics 51,1398 (2007).

  • A.S. El-Said, W. Meissl, M. Simon, J.R. Crespo López-Urrutia, C. Lemell, J. Burgdörfer, I.C. Gebeshuber, HP. Winter, J. Ullrich, C. Trautmann, M. Toulemonde, F. Aumayr, "Potential energy threshold for nano-hillock formation by impact of slow highly charged ions on a CaF2(111) surface". Nucl. Instr. and Meth. B 258, 167 (2007).

  • A.S. El-Said, W. Meissl, M. Simon, J.R. Crespo López-Urrutia, I.C. Gebeshuber, HP. Winter, M. Lang, F. Aumayr, " surface nanostructures induced by slow highly charged ions on CaF2 single crystals studied by scanning force microscopy". Nuclear Instruments and Methods B 256, 364 (2007).

  • A.S. El-Said, F. Aumayr, S. Della-Negra , R. Neumann c, K. Schwartz, M. Toulemonde, C. Trautmann, K.-O. Voss "Scanning force microscopy of surface damage created by fast C60 cluster ions in CaF2 and LaF3 single crystals". Nucl. Instr. and Meth. B 256, 313 (2007).

  • Ille C. Gebeshuber, Richard A.P. Smith, Ayman S. El-Said, Katharina Kaska, Sebastian Pleschko, Clemens Gruenberger, Hannspeter Winter, and Friedrich Aumayr, "UHV and ambient AFM investigations of silicon surfaces nanostructured with singly- and multiply-charged ions" in "Advances in single molecule research for biology and nanoscience", Trauner Verlag Universität, Schriftenreihe Biophysik, Band 1, Linz, Austria, ISBN 3-85499-163-0, ISBN978-3-85499-163-2, 117 (2006).

  • A.S. El-Said, R. Neumann, K. Schwartz, C. Trautmann "Swelling and creation of color centers in MgF2 single crystals irradiated with energetic heavy ions" Nuclear Instruments and Methods B 245, 250 (2006).

  • K. Schwartz, C. Trautmann, A.S. El-Said, R. Neumann, M. Toulemonde, W. Knolle, "Color center creation in LiF under irradiation with swift heavy ions: dependence on energy loss and fluence" Physical  Review B 70, 184104 (2004).

  • A.S. El-Said, M. Cranney, N. Ishikawa, A. Iwase, R. Neumann, K. Schwartz, M. Toulemonde, C. Trautmann, "Study of heavy-ion induced modifications in BaF2 and LaF3 single crystals" Nucl. Instr. and Meth. B 218, 492 (2004).

  • C. Müller, M. Cranney, A.S. El-Said, N. Ishikawa, A. Iwase, M. Lang, R. Neumann "Ion tracks on LiF and CaF2 single crystals characterized by scanning force microscopy", Nuclear Instruments and Methods B 191, 246 (2002).

  • A.S. El-Said, R. Neumann, K. Schwartz, C. Trautmann "Heavy ion induced damage in MgF2 crystals" Rad. Eff. and Def. Solids 157, 649 (2002).

  • A.S. El-Said, M. Cranney, M. Toulemonde, A. Iwase, R. Neumann, K. Schwartz, C. Trautmann, "SFM of heavy-ion induced tracks in BaF2 single crystals" GSI Scientific Report (2002).

  • A.S. El-Said, R. Neumann, K. Schwartz, C. Trautmann, Scanning force microscopy of heavy-ion induced damage in lanthanum fluoride single crystals, Surface and Coatings Technology 158, 522 (2002).

  • A.S. El-Said, C. Mueller, R. Neumann, K. Schwartz, C. Trautmann, Defect creation by energetic heavy ions in different fluorides crystals, GSI Scientific Report (2001).

  • A.H. El-Farrash, M.I. Yousef, A. Abu El-Ela, A.S. El-Said "Natural Radioactivity in the Beach Samples North of Delta Between Damietta and Burg El- Burrullus" Radioactivity and Radiochemistry (USA), 10, 41 (1999).

  • A.H. El-Farrash, A.A. El-Sheikh, A. Abu El-Ela, S.H. Ibrahim, A.S. El-Said "Study of the Natural Radioactivity Content & Radon Emanation Rates in Some Building Materials" Egyptian J. Biophysics, 4, 229 (1998).

  • A.H. El-Farrash, A.A. El-Sheikh, A. Abu El-Ela, A.S. El-Said "Test and performance of Low Level-Counting Gamma-Ray Spectroscopic Systems" Mans. Sci. Bull. (C Nat.Sci) 24 (1) June (1997).