Article
Nuclear Science & Technology
R. A. Rymzhanov, A. Akzhunussov, A. E. Volkov, A. D. Ibrayeva, V. A. Skuratov
Summary: The effect of ion irradiation on thermal transport in alumina was studied using molecular dynamics simulation. It was found that increasing ion flux leads to a decrease in thermal conductivity of alumina. The experimental and simulated results are in reasonable agreement, and it was observed that the highly damaged core of ion tracks has a significant impact on heat transport.
NUCLEAR MATERIALS AND ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Thomas Bierschenk, Werner Wesch, Boshra Afra, Matias D. Rodriguez, Flyura Djurabekova, Levi Keller, Olli H. Pakarinen, Kai Nordlund, Mark C. Ridgway, Patrick Kluth
Summary: Swift heavy ion irradiation leads to the self-organization of nano-porosity in amorphous Ge, with pores segregating into layers parallel to the sample surface. The self-organization mechanism depends on ion energy, thickness of the amorphous Ge layer, and ion incidence angle, with a characteristic length determined by ion energy and irradiation angle. Molecular dynamics simulations show that voids form due to the transition from low-density amorphous to high-density liquid phase, resulting in a flow away from large pores and surfaces and supporting void formation at the amorphous/crystalline interface.
Article
Crystallography
Ainash Zhumazhanova, Alisher Mutali, Anel Ibrayeva, Vladimir Skuratov, Alma Dauletbekova, Ekaterina Korneeva, Abdirash Akilbekov, Maxim Zdorovets
Summary: A depth-resolved Raman spectroscopy technique was used to study residual stress profiles in polycrystalline silicon nitride irradiated with Xe and Bi ions. Both compressive and tensile stress fields were identified, separated by a buffer zone at a depth coinciding with the thickness of an amorphous layer. The size of the amorphous layer was evaluated from the dose dependence of the Raman spectra.
Article
Materials Science, Multidisciplinary
R. Assylbayev, A. Akilbekov, G. Baubekova, K. Chernenko, M. Zdorovetz, E. Feldbach, E. Shablonin, A. Lushchik
Summary: This study investigates low-temperature cathodo- and photoluminescence in MgO single crystals, specifically the F and F+ centers as well as bivacancies. The results show that the cathodoluminescence bands associated with the F, F+ and P centers strengthen with Xe-irradiation fluence up to 10(13) ions/cm(2), but experience drastic emission attenuation at higher fluences. The limitations of using luminescence methods for detecting structural point defects induced by heavy irradiation are also discussed.
Article
Chemistry, Physical
Parasmani Rajput, Manvendra Kumar, Udai B. Singh, S. Potdar, Anil Gome, V. R. Reddy, D. Bhattacharyya, S. N. Jha, Saif A. Khan, Fouran Singh
Summary: The study investigates interface mixing in [Fe/Cr/Al](x10) multilayers under 120 MeV Ag(9+) swift heavy ions irradiation, showing that thinner multilayers exhibit higher interface mixing compared to thicker ones.
SURFACES AND INTERFACES
(2021)
Article
Nuclear Science & Technology
Li-Qing Zhang, Chong-Hong Zhang, Chen-Chun Hao, Guo-Dong Hu, Zheng-Dong Feng, Yong-Jian Tang, Wen-Kun Zhu, Jian-Yang Li, Qing Huang
Summary: SiC fibers were irradiated with Sn-112(27.3+) ions and the effects on mechanical properties and surface characteristics were studied. Carbon concentration on the fiber surface increased while silicon concentration decreased. The average tensile strength and elastic modulus of the fibers decreased with increasing ion fluence.
NUCLEAR SCIENCE AND TECHNIQUES
(2022)
Article
Materials Science, Multidisciplinary
Azat Abdullaev, Ainur Koshkinbayeva, Vinay Chauhan, Zhangatay Nurekeyev, Jacques O'Connell, Arno Janse van Vuuren, Vladimir Skuratov, Marat Khafizov, Zhandos N. Utegulov
Summary: Thermal transport in swift heavy ion (SHI) irradiated insulating single crystalline oxide materials was investigated. The study revealed that different materials were affected by different forms of damage, resulting in a decrease in thermal conductivity. It was also found that materials with lower penetrating thermal waves were more likely to form surface hillocks. An analytical model and depth profiling were used to determine the depth-dependent damage. YAG material had the highest level of damage, while MgO showed the strongest dependence. This research provides important insights into the thermal transport degradation and recovery of oxide ceramics for next-generation nuclear reactor applications.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
N. Ishikawa, Y. Fujimura, K. Kondo, G. L. Szabo, R. A. Wilhelm, H. Ogawa, T. Taguchi
Summary: In this study, the formation of irradiation-induced hillock chains in a doped SrTiO3 crystal was examined using atomic force microscopy and scanning electron microscopy. It was found that the formation of multiple hillocks is accompanied by the presence of continuous ion tracks. Cross-sectional transmission electron microscopy revealed that the size of ion tracks varies with depth, with larger tracks in the near-surface region and smaller tracks in the deeper region. The absence of recrystallization in the near-surface region was attributed to material transport towards the surface.
Article
Materials Science, Multidisciplinary
E. A. Korneeva, A. Ibrayeva, A. Janse van Vuuren, L. Kurpaska, M. Clozel, K. Mulewska, N. S. Kirilkin, V. A. Skuratov, J. Neethling, M. Zdorovets
Summary: The results of nanoindentation tests on silicon nitride irradiated with different ions showed that there was insignificant change in hardness for ions with electronic stopping power less than the threshold of latent track formation, while accumulation of latent tracks produced by Xe and Bi ions resulted in first hardening and then softening of irradiated silicon nitride.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Materials Science, Ceramics
Jianxiong Lan, Pengfei Zhai, Shuai Nan, Lijun Xu, Jingjing Niu, Cheng Tian, Zongzhen Li, Weixing Li, Jie Liu, Rodney Charles Ewing
Summary: This study investigates the high-pressure phase stability of CeO2 irradiated by swift heavy ions using high-pressure Raman spectroscopy. The results show that high-fluence ion irradiation significantly enhances the phase stability of CeO2, attributed to the formation of large interstitial-type defect clusters.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Dmitry Temnov, Arnoux Rossouw, Iliya Vinogradov, Natalia Shabanova, Tamara Mamonova, Nikolay Lizunov, Willem Perold, Alexander Nechaev
Summary: Thermally stimulated spectroscopy methods were used to analyze the electret state of PET films. The analysis revealed significant changes in the energy states of electric charge in PET films after irradiation and treatment processes, suggesting the possibility of creating an electret state.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Materials Science, Coatings & Films
Taleb Alwadi, Christian Notthoff, Shankar Dutt, Jessica Wierbik, Nahid Afrin, Alexander Kiy, Patrick Kluth
Summary: This study investigates the effects of ion fluence and irradiation angle on ion track formation, irradiation-induced damage, and porosity formation in InSb. The results show that off-normal irradiation leads to larger ion track radius and increased porosity. Additionally, InSb samples exhibit higher swelling compared to GaSb samples under identical conditions.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Article
Instruments & Instrumentation
Q. M. Xu, J. Gou, C. H. Zhang, Z. H. Yang, Y. Y. Wang, X. X. Han, J. Y. Li, Y. Song
Summary: Ion irradiation of aluminum magnesium spinel (MgOAl2O3) can result in luminescence emission. This study irradiated single crystals of MgOAl2O3 with swift heavy ions and obtained emission spectra in the range of 200-800 nm. The emission bands originated from radiative recombination of excitons and impurity ions. The results showed that the spectral intensity increased with higher ion energy but decreased with increasing irradiation dose due to crystal damage. Luminescence emission occurred when the critical electronic energy loss reached approximately 7.2 keV/nm.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2023)
Article
Materials Science, Multidisciplinary
Xinqing Han, Qing Huang, Miguel L. Crespillo, Eva Zarkadoula, Yong Liu, Xuelin Wang, Peng Liu
Summary: The formation mechanism of damage morphologies in LiNbO3 crystals under ion irradiation with different ion velocities and electronic energy losses is studied. Experimental characterizations and numerical calculations were used to analyze the correlation between spectra and energy loss profiles of irradiated regions. The results provide insight into the damage behavior of crystal materials in extreme radiation environments and are helpful for selecting appropriate irradiation parameters.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Y. Pipon, G. Victor, N. Moncoffre, G. Gutierrez, S. Miro, T. Douillard, O. Rapaud, N. Pradeilles, P. Sainsot, N. Toulhoat, M. Toulemonde
Summary: The behavior of boron carbide (B4C) under irradiation, particularly in relation to high electronic stopping powers (Se), has been extensively studied to predict its longevity in future nuclear fission reactors. Experimental results showed that under high Se values, significant surface damage and bulk amorphization occur in B4C, indicating the importance of understanding these effects for predicting material performance under irradiation.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Helene Lotz, Charly Carriere, Christian Bataillon, Emmanuel Gardes, Isabelle Monnet, Eddy Foy, Michel L. Schlegel, James J. Dynes, Delphine Neff, Florence Mercier-Bion, Philippe Dillmann
Summary: The corrosion experiments conducted on metallic substrates exposed to silicate environment at 120 degrees C for 30 days revealed the formation of nanometric inner and outer layers. The inner layer is composed of compact and adherent nanocrystallized magnetite, while the outer layer is made of Fe-rich phyllosilicate, smectite, and serpentine, showing a more porous and poorly adherent structure than the inner layer.
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
(2021)
Article
Physics, Multidisciplinary
Miguel C. Sequeira, Jean-Gabriel Mattei, Henrique Vazquez, Flyura Djurabekova, Kai Nordlund, Isabelle Monnet, Pablo Mota-Santiago, Patrick Kluth, Clara Grygiel, Shuo Zhang, Eduardo Alves, Katharina Lorenz
Summary: This study demonstrates that recrystallization induced by swift heavy ions is the key mechanism behind the observed resistance in GaN. Atomistic simulations predict and reveal the significant reduction in expected damage levels, with excellent agreement between simulation and experiment. The developed modeling scheme is expected to improve the design and test of future radiation-resistant GaN-based devices.
COMMUNICATIONS PHYSICS
(2021)
Article
Nuclear Science & Technology
Aurelien Favre, Vincent Morel, Arnaud Bultel, Gilles Godard, Said Idlahcen, Abdenacer Benyagoub, Isabelle Monnet, Alexandre Semerok, Maria Dinescu, Sabina Markelj, Philippe Magaud, Christian Grisolia
Summary: The LIBS method is used to determine the multi-elemental composition of solid samples, and the double pulse configuration can improve precision. This paper presents preliminary results of double pulse configuration on fusion-relevant materials.
FUSION ENGINEERING AND DESIGN
(2021)
Article
Optics
Gurvan Brasse, Pavel Loiko, Clara Grygiel, Abdelmjid Benayad, Franck Lemarie, Viktor Zakharov, Andrey Veniaminov, Jean-Louis Doualan, Alain Braud, Patrice Camy
Summary: Highly doped Yb3+:LiYF4 single-crystalline thin films were successfully grown on undoped LiYF4 substrates using Liquid Phase Epitaxy, showing good crystalline quality and polarized properties. This radiation material has promising potential for applications in laser devices.
JOURNAL OF LUMINESCENCE
(2021)
Article
Physics, Applied
G. Velisa, E. Zarkadoula, D. Iancu, M. D. Mihai, C. Grygiel, I Monnet, B. Kombaiah, Y. Zhang, W. J. Weber
Summary: The combination of low-energy ion-induced disordering and ionizing ion irradiation shows promise for tailoring ion tracks in the near-surface of defective KTaO3. The size of latent ion tracks increases with electronic energy loss and pre-existing damage level. Highly ionizing ions can either enhance or suppress damage accumulation in KTaO3 depending on the electronic energy loss and the amount of pre-existing damage.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Applied
Jun Lin, Guillaume Toquer, Clara Grygiel, Sandrine Dourdain, Yannick Guari, Cyrielle Rey, Jeremy Causse, Xavier Deschanels
Summary: This study investigates the evolution of the mesoporous structure of two silicas MCM-41 and SBA-15 under a 2 MeV electron beam. The results show that irradiation-induced porosity closure is more effective on smaller pores. This phenomenon could potentially be exploited for RadioNuclides encapsulation.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Sophie Eve, Alexis Ribet, Jean-Gabriel Mattei, Clara Grygiel, Eric Hug, Isabelle Monnet
Summary: The research found that irradiation causes changes in the lattice of GaN, leading to residual stresses and altering deformation mechanisms, increasing dislocation loop density. At higher fluences, overlapping latent tracks created by swift heavy ions result in a significant decrease in mechanical characteristics of the thin film.
Article
Physics, Applied
A. Debelle, G. Gutierrez, A. Boulle, I. Monnet, L. Thome
Summary: Damage induced in GaAs crystals irradiated with dual-ion beams was investigated, showing differences in amorphization and elastic strain development under different energy depositions.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
G. Gutierrez, H. Guessous, D. Gosset, M. Bricout, I. Monnet, F. Garrido, C. Onofri, G. Adroit, A. Debelle
Summary: The coupled effects of nuclear and electronic energy losses were investigated in uranium dioxide (UO2). Single and sequential ion irradiations were carried out to study the effect of electronic ionizations on the ballistic damage. It was observed that high-energy ions induce significant changes in defect distribution and accelerate the transformation from dislocation loops to dislocation lines. Surprisingly, with the increase of 92 MeV Xe ions, the stress starts to increase again, suggesting a possible synergetic effect between pre-existing defects and those generated by the irradiation.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
R. Rahali, H. Lebius, A. Benyagoub, E. Gardes, S. Guillous, I. Monnet, M. Sall, M. P. Chauvat, D. Marie, C. Grygiel
Summary: In this study, we present first experimental results on the micro-structuration of monocrystalline strontium titanate (100)-SrTiO3 under swift heavy ion irradiation. A self-organized structure appears on its surface due to irradiation, and further irradiation at high fluences leads to an anisotropic plastic deformation effect, inducing the observed self-organized structure. The characteristics of the resulting surface morphology can be controlled and customized, offering possibilities for surface structuration.
Article
Chemistry, Physical
Przemyslaw Jozwik, Jose P. S. Cardoso, Diogo F. Carvalho, Maria R. P. Correia, Miguel C. Sequeira, Sergio Magalhaes, Djibril Nd Faye, Clara Grygiel, Isabelle Monnet, Adam S. Bross, Christian Wetzel, Eduardo Alves, Katharina Lorenz
Summary: The effects of irradiation by xenon and lead ions on InGaN/GaN bilayers were studied, showing that InGaN is more susceptible to radiation damage than GaN. Monte Carlo simulations and experimental results revealed the damage mechanism involved.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
J. G. Mattei, M. Sall, F. Moisy, A. Ribet, E. Balanzat, C. Grygiel, I. Monnet
Summary: Gallium nitride was irradiated with fullerene projectiles above the electronic stopping power threshold, leading to ion track formation. Using Transmission Electron Microscopy, researchers identified structural and chemical changes induced by fullerene irradiation, including local amorphization inside the ion tracks and local stress in the wurtzite structure surrounding the tracks. STEM Electron Energy Loss Spectroscopy showed that Ga/N stoichiometry remained in the track core, with oxidation detected at the surface, and nitrogen bubbles were found encapsulated inside the ion tracks.
