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2. Interaction of multiply charged ions with large free silver nanoparticles: Multielectron capture, fragmentation, and sputtering phenomena

Author

Alicja Domaracka, Patrick Rousseau, Bernd A. Huber, Arkadiusz Mika, Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), and Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Nanoparticle, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Molecular physics, Silver nanoparticle, Ion, Degree of ionization, Fragmentation (mass spectrometry), Sputtering, 0103 physical sciences, Cluster (physics), Ionization energy, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], 010306 general physics, 0210 nano-technology, Nuclear Experiment
Abstract

International audience; We report on the interaction of multiply charged ions at keV energies with free Ag nanoparticles with diameters of ∼6 nm (containing about 6600 Ag atoms). As the ionization energy increases only very slowly with the degree of ionization, multielectron capture processes are very likely to occur in peripheral collisions with large cluster sizes. However, due to the large particle size, the produced highly charged Ag nanoparticles are mostly stable. For projectile charge states below q=8 the geometrical cross section overcomes the cross section for peripheral electron transfer, and penetrating collisions become dominant. Therefore, these collisions can be described as ion collision with a nanosurface, where the distribution of small-size fragments with n

Published
2019

3. Fragmentation of Bi clusters by multiply charged ions

Author

Alicja Domaracka, Arkadiusz Mika, P. Rouseau, Bernd A. Huber, Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), and Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Fission, Nanoparticle, Trimer, Kinetic energy, 01 natural sciences, Molecular physics, 010305 fluids & plasmas, Ion, Metal, Semi-empirical mass formula, Fragmentation (mass spectrometry), visual_art, 0103 physical sciences, visual_art.visual_art_medium, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], 010306 general physics
Abstract

We report on collisions of multiply charged ions with free Bi nanoparticles in the gas phase. The nanoparticles contain up to 650 Bi atoms corresponding to a diameter of 3.5 nm. The stability limit of multiply charged Bi clusters has been investigated yielding appearance sizes for Bi clusters in charge states up to $q=6$, which are in good agreement with predictions of the liquid drop model. This finding underlines the metallic character of the Bi particles. By coincidence measurements the correlation between the dominant fragments ${\mathrm{Bi}}^{+}$ and ${{\mathrm{Bi}}_{3}}^{+}$ and larger multiply charged residues has been determined. The comparison of the kinetic energies with $Q$-value calculations within the liquid drop model allowed identifying specific decay processes as two-body asymmetric fission or multifragmentation events. The higher kinetic energies of singly charged monomer ions compared to that of trimer ions are explained by a higher fissility of the decaying system. Correlation islands for small fragments indicate different decay mechanisms based on two-step processes where a third undetected fragment can be emitted in the first or the second step.

Published
2019

4. Ion-collision induced molecular growth in polycyclic aromatic hydrocarbon clusters: comparison of C16H10 structural isomers

Author

Arkadiusz Mika, Patrick Rousseau, Alicja Domaracka, R. Delaunay, Bernd A. Huber, Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU), Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), and Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Fluoranthene, chemistry.chemical_classification, [PHYS.PHYS.PHYS-ATM-PH]Physics [physics]/Physics [physics]/Atomic and Molecular Clusters [physics.atm-clus], Optical physics, Polycyclic aromatic hydrocarbon, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, Photochemistry, 01 natural sciences, Atomic and Molecular Physics, and Optics, 0104 chemical sciences, Ion, chemistry.chemical_compound, chemistry, Structural isomer, Cluster (physics), Pyrene, Molecule, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], 0210 nano-technology, ComputingMilieux_MISCELLANEOUS
Abstract

The interaction of 3 keV Ar+ ions with clusters of two structural isomers of C16H10 polycyclic aromatic hydrocarbons, namely fluoranthene and pyrene, has been studied. Following the collision with the atomic projectile, a rich molecular growth inside of the cluster is observed for both isomers. The observed growth processes include the hydrogenation of the parent molecule and the addition of CHx units. They are more important in the case of collisions with fluoranthene clusters, this can be explained by a more flexible carbon skeleton and lower reaction barriers. Moreover, the evolution of the hydrogenation with the size of the growth products gives information on the growth mechanisms.

Published
2018

5. Ion collision-induced chemistry in pure and mixed loosely bound clusters of coronene and C

Author

Alicja, Domaracka, Rudy, Delaunay, Arkadiusz, Mika, Michael, Gatchell, Henning, Zettergren, Henrik, Cederquist, Patrick, Rousseau, and Bernd A, Huber

Abstract

Ionization, fragmentation and molecular growth have been studied in collisions of 22.5 keV He2+- or 3 keV Ar+-projectiles with pure loosely bound clusters of coronene (C24H12) molecules or with loosely bound mixed C60-C24H12 clusters by using mass spectrometry. The heavier and slower Ar+ projectiles induce prompt knockout-fragmentation - C- and/or H-losses - from individual molecules and highly efficient secondary molecular growth reactions before the clusters disintegrate on picosecond timescales. The lighter and faster He2+ projectiles have a higher charge and the main reactions are then ionization by ions that are not penetrating the clusters. This leads mostly to cluster fragmentation without molecular growth. However, here penetrating collisions may also lead to molecular growth but to a much smaller extent than with 3 keV Ar+. Here we present fragmentation and molecular growth mass distributions with 1 mass unit resolution, which reveals that the same numbers of C- and H-atoms often participate in the formation and breaking of covalent bonds inside the clusters. We find that masses close to those with integer numbers of intact coronene molecules, or with integer numbers of both intact coronene and C60 molecules, are formed where often one or several H-atoms are missing or have been added on. We also find that super-hydrogenated coronene is formed inside the clusters.

Published
2018

6. Shock-driven formation of covalently bound carbon nanoparticles from ion collisions with clusters of C60 fullerenes

Author

Arkadiusz Mika, Alicja Domaracka, Lamri Adoui, Michael Gatchell, Henning Zettergren, R. Delaunay, Patrick Rousseau, Bernd A. Huber, Henrik Cederquist, Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU), Department of Physics [Stockholm], Stockholm University, Centre National de la Recherche Scientifique (CNRS), AlbaNova University Center, Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), and Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Fullerene, Projectile, [PHYS.PHYS.PHYS-ATM-PH]Physics [physics]/Physics [physics]/Atomic and Molecular Clusters [physics.atm-clus], chemistry.chemical_element, General Chemistry, 01 natural sciences, Shock (mechanics), Ion, Molecular dynamics, chemistry, Chemical physics, Covalent bond, 0103 physical sciences, Physics::Atomic and Molecular Clusters, Molecule, General Materials Science, [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph], 010306 general physics, 010303 astronomy & astrophysics, Carbon, ComputingMilieux_MISCELLANEOUS
Abstract

We show that the energetic processing of C60 clusters by slow atomic projectiles leads to ultrafast ( ps ) formation of large covalent carbon nanoparticles containing a few hundreds of atoms. The underlying mechanism is found to be due to impulse-driven collisions between the projectile and the nuclei of the molecules. Experimental findings are well reproduced by classical molecular dynamics simulations. The cross sections for molecular growth processes forming covalent systems which contain more than 60 carbon atoms are about 5 ⋅ 10 − 14 cm 2 representing more than 70% of the geometrical cross sections. This demonstrates the high efficiency of the underlying processes. The formed carbon nanoparticles contain both aromatic and aliphatic structures which have also been considered as dust components in space.

Published
2018

7. Ion collision-induced chemistry in pure and mixed loosely bound clusters of coronene and C 60 molecules

Author

Henning Zettergren, Henrik Cederquist, Alicja Domaracka, Michael Gatchell, R. Delaunay, Bernd A. Huber, Patrick Rousseau, Arkadiusz Mika, Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU), Centre National de la Recherche Scientifique (CNRS), Department of Physics [Stockholm], Stockholm University, Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), and Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Chemistry, [PHYS.PHYS.PHYS-ATM-PH]Physics [physics]/Physics [physics]/Atomic and Molecular Clusters [physics.atm-clus], General Physics and Astronomy, Mass spectrometry, 01 natural sciences, Coronene, Ion, chemistry.chemical_compound, Fragmentation (mass spectrometry), Covalent bond, Chemical physics, Ionization, 0103 physical sciences, Physics::Atomic and Molecular Clusters, Cluster (physics), Molecule, [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph], Physical and Theoretical Chemistry, Nuclear Experiment, 010306 general physics, 010303 astronomy & astrophysics, ComputingMilieux_MISCELLANEOUS
Abstract

Ionization, fragmentation and molecular growth have been studied in collisions of 22.5 keV He2+- or 3 keV Ar+-projectiles with pure loosely bound clusters of coronene (C24H12) molecules or with loosely bound mixed C60-C24H12 clusters by using mass spectrometry. The heavier and slower Ar+ projectiles induce prompt knockout-fragmentation - C- and/or H-losses - from individual molecules and highly efficient secondary molecular growth reactions before the clusters disintegrate on picosecond timescales. The lighter and faster He2+ projectiles have a higher charge and the main reactions are then ionization by ions that are not penetrating the clusters. This leads mostly to cluster fragmentation without molecular growth. However, here penetrating collisions may also lead to molecular growth but to a much smaller extent than with 3 keV Ar+. Here we present fragmentation and molecular growth mass distributions with 1 mass unit resolution, which reveals that the same numbers of C- and H-atoms often participate in the formation and breaking of covalent bonds inside the clusters. We find that masses close to those with integer numbers of intact coronene molecules, or with integer numbers of both intact coronene and C60 molecules, are formed where often one or several H-atoms are missing or have been added on. We also find that super-hydrogenated coronene is formed inside the clusters.

Published
2018

8. Production of doubly-charged highly reactive species from the long-chain amino acid GABA initiated by Ar

Author

Dariusz Grzegorz, Piekarski, Rudy, Delaunay, Arkadiusz, Mika, Sylvain, Maclot, Lamri, Adoui, Fernando, Martín, Manuel, Alcamí, Bernd A, Huber, Patrick, Rousseau, Sergio, Díaz-Tendero, and Alicja, Domaracka

Subjects
Ions, Spectrometry, Mass, Electrospray Ionization, Quantum Theory, Electrons, Gases, Argon, Molecular Dynamics Simulation, Reactive Oxygen Species, Reactive Nitrogen Species, gamma-Aminobutyric Acid
Abstract

We present a combined experimental and theoretical study of the fragmentation of multiply-charged γ-aminobutyric acid molecules (GABA

Published
2017

9. New research in ionizing radiation and nanoparticles: The ARGENT project

Author

Sophie Grellet, Kevin M. Prise, K. Stokbro, Ali Traore, Pablo de Vera, Gustavo García, Kaspar Haume, Karl T. Butterworth, Cédric Louis, Olivier Tillement, Bernd A. Huber, Andrey V. Solov’yov, Vivek Thakare, L. Ellis-Gibbings, Alexey V. Verkhovtsev, Vu-Long Tran, Daria Boscolo, Emanuele Scifoni, François Lux, Frederick Currell, Sandrine Lacombe, Soraia Rosa, Arkadiusz Mika, Jon P. Golding, Frédéric Boschetti, V. Ivošev, Nigel J. Mason, and M. Bolsa Ferruz

Subjects
Engineering, Operations research, business.industry, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Initial training, European commission, Engineering ethics, 0210 nano-technology, business, Scientific disciplines
Abstract

Bolsa Ferruz M. et al., This chapter gives an overview of “ARGENT ” (“Advanced Radiotherapy , Generated by Exploiting Nanoprocesses and Technologies”) , an ongoing international Initial Training Network project , supported by the European Commission . The project , bringing together world-leading researchers in physics, medical physics, chemistry, and biology, aims to train 13 Early Stage Researchers (ESRs) whose research activities are linked to understanding and exploiting the nanoscale processes that drive physical, chemical, and biological effects induced by ionizing radiation in the presence of radiosensitizing nanoparticles . This research is at the forefront of current practices and involves many experts from the respective scientific disciplines. In this chapter, we overview research topics covered by ARGENT and briefly describe the research projects of each ESR.

Published
2016

10. Phase transition of a perovskite strongly coupled to the vacuum field

Author

Mir Wais Hosseini, James A. Hutchison, Cyriaque Genet, Shaojun Wang, Thomas W. Ebbesen, Arkadiusz Mika, and Abdelaziz Jouaiti

Subjects
Strongly coupled, Condensed Matter::Materials Science, Phase transition, Hysteresis, chemistry.chemical_compound, Condensed matter physics, Field (physics), Chemistry, Oxide, General Materials Science, Perovskite (structure)
Abstract

The hysteresis and dynamics of the phase transition of the perovskite salt [Pb(II)I4(2-),(C12H25NH3(+))2] is shown to be significantly modified when strongly coupled to the vacuum field inside a micro-cavity. The transition barrier is increased and the hysteresis loop is enlarged, demonstrating the potential of controlling the electromagnetic environment of a material.

Published
2014

11. Ion-induced molecular growth in clusters of small hydrocarbon chains

Author

Henrik Cederquist, Kostiantyn Kulyk, Michael Gatchell, Giovanna D'Angelo, R. Delaunay, Henning Zettergren, Bernd A. Huber, Alicja Domaracka, Arkadiusz Mika, and Patrick Rousseau

Subjects
chemistry.chemical_classification, Projectile, Chemistry, FOS: Physical sciences, General Physics and Astronomy, Nanoparticle, Ring (chemistry), Kinetic energy, 01 natural sciences, 3. Good health, Ion, Interstellar medium, Hydrocarbon, Chemical physics, 0103 physical sciences, Molecule, Physics - Atomic and Molecular Clusters, Physical and Theoretical Chemistry, Atomic and Molecular Clusters (physics.atm-clus), Nuclear Experiment, 010306 general physics, 010303 astronomy & astrophysics
Abstract

We report on studies of collisions between 3 keV Ar$^+$ projectile ions and neutral targets of isolated 1,3-butadiene (C$_4$H$_6$) molecules and cold, loosely bound clusters of these molecules. We identify molecular growth processes within the molecular clusters that appears to be driven by knockout processes and that could result in the formation of (aromatic) ring structures. These types of reactions are not unique to specific projectile ions and target molecules, but will occur whenever atoms or ions with suitable masses and kinetic energies collide with aggregates of matter, such as carbonaceous grains in the interstellar medium or aerosol nanoparticles in the atmosphere., Comment: 8 pages, 6 figures, Accepted for publication in Physical Chemistry Chemical Physics 2017

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