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Your search keyword '"Lorenzo, Avaldi"' showing total 5 results
Start Over Author "Lorenzo, Avaldi" Journal the european physical journal d
5 results on '"Lorenzo, Avaldi"'

1. Roadmap on dynamics of molecules and clusters in the gas phase

Author

Claire Romanzin, Alicja Domaracka, S. D. Tošić, Michael Gatchell, Jaroslav Kočišek, Simon Albertini, Mattea Carmen Castrovilli, Steen Brøndsted Nielsen, Ewa Erdmann, Janina Kopyra, Sylvain Maclot, Daniela Ascenzi, Amanda L. Steber, Klavs Hansen, Marta Łabuda, Christophe Jouvet, Lars H. Andersen, Dariusz G. Piekarski, Manuel Alcamí, Alicia Palacios, Sergio Díaz-Tendero, Henrik Cederquist, Elisabeth Gruber, Lorenzo Avaldi, Paola Bolognesi, Per Johnsson, Yoni Toker, Shirin Faraji, Oded Heber, Annemieke Petrignani, Christina Kjær, A. Candian, Aleksandar R. Milosavljević, Jennifer A. Noble, Paulo Limão-Vieira, Patrick Rousseau, Henning T. Schmidt, Eduardo Carrascosa, Juraj Fedor, Denis S. Tikhonov, Thomas Schlathölter, James N. Bull, Sadia Bari, Henning Zettergren, Department of Physics [Stockholm], Stockholm University, 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), Zernike Institute for Advanced Materials, University of Groningen [Groningen], Istituto di Struttura della Materia (CNR-ISM), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid (Spain), Department of Theoretical Physics and Quantum Information (DTPQI), ‎ Gdansk University of technology, Institute of Physics [Belgrade], University of Belgrade [Belgrade], Department of Physics (Göthenburg), University of Gothenburg (GU), Department of Physics, Mathematical Physics [Lund], Lund University [Lund], Deutsches Elektronen-Synchrotron [Hamburg] (DESY), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Departamento de Química, Modulo 13, Universidad Autónoma de Madrid, Universidad Autónoma de Madrid (UAM), Institute of Physical Chemistry [Warsaw], Polish Academy of Sciences, Department III, Normandie Université (NU), Department of Physics (DPUT), University of Trento [Trento], Institut de Chimie Physique (ICP), Institut de Chimie du CNRS (INC)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Siedlce University of Natural Sciences and Humanities, Centro de Física e Investigação Tecnológica [Lisboa] (CEFITEC), Departamento de Fìsica [Lisboa] (DF), Faculdade de Ciências e Tecnologia = School of Science & Technology (FCT NOVA), Universidade Nova de Lisboa = NOVA University Lisbon (NOVA)-Universidade Nova de Lisboa = NOVA University Lisbon (NOVA)-Faculdade de Ciências e Tecnologia = School of Science & Technology (FCT NOVA), Universidade Nova de Lisboa = NOVA University Lisbon (NOVA)-Universidade Nova de Lisboa = NOVA University Lisbon (NOVA), J. Heyrovský Institute of Physical Chemistry of the ASCR, Czech Academy of Sciences [Prague] (CAS), Institut für Ionenphysik und Angewandte Physik - Institute for Ion Physics and Applied Physics [Innsbruck], Leopold Franzens Universität Innsbruck - University of Innsbruck, Department of Physics and Astronomy [Aarhus], Aarhus University [Aarhus], Department of Particle Physics, Weizmann Institute of Science, Ajo, Bar-Ilan University [Israël], Tianjin University of Science and Technology (TUST), Physique des interactions ioniques et moléculaires (PIIM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Ecole Polytechnique Fédérale de Lausanne (EPFL), University of East Anglia [Norwich] (UEA), van ‘t Hoff Institute for Molecular Sciences, Universiteit van Amsterdam (UvA), DF – Departamento de Física, CeFITec – Centro de Física e Investigação Tecnológica, UAM. Departamento de Química, Molecular Processes Modeling Group, Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Caen Normandie (UNICAEN), Consiglio Nazionale delle Ricerche [Roma] (CNR), Universidad Autonoma de Madrid (UAM), School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, United Kingdom, Van't Hoff Institute for Molecular Sciences, University of Amsterdam [Amsterdam] (UvA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Quantum interactions and structural dynamics, and Theoretical Chemistry

Subjects
ab-initio, Astrochemistry, cold ion spectroscopy, COLD ION SPECTROSCOPY, storage-ring, Clusters in the Gas Phase, Nanotechnology, 02 engineering and technology, Physics, Atomic, Molecular & Chemical, 010402 general chemistry, 01 natural sciences, Gas phase, POLYCYCLIC AROMATIC-HYDROCARBONS, resolved photoelectron-spectroscopy, fragmentation dynamics, Molecule, ddc:530, STORAGE-RING, THERMIONIC EMISSION, AB-INITIO, Physics, polycyclic aromatic-hydrocarbons, Science & Technology, low-energy electrons, LOW-ENERGY ELECTRONS, FRAGMENTATION DYNAMICS, RESOLVED PHOTOELECTRON-SPECTROSCOPY, [PHYS.PHYS.PHYS-ATM-PH]Physics [physics]/Physics [physics]/Atomic and Molecular Clusters [physics.atm-clus], Optics, SUPERFLUID-HELIUM DROPLETS, MASS-SPECTROMETRY, Química, mass-spectrometry, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, 0104 chemical sciences, Dynamics of Molecules, superfluid-helium droplets, Physical Sciences, thermionic emission, [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph], 0210 nano-technology
Abstract

The European physical journal / D 75(5), 152 (2021). doi:10.1140/epjd/s10053-021-00155-y, This roadmap article highlights recent advances, challenges and future prospects in studies of the dynamics of molecules and clusters in the gas phase. It comprises nineteen contributions by scientists with leading expertise in complementary experimental and theoretical techniques to probe the dynamics on timescales spanning twenty order of magnitudes, from attoseconds to minutes and beyond, and for systems ranging in complexity from the smallest (diatomic) molecules to clusters and nanoparticles. Combining some of these techniques opens up new avenues to unravel hitherto unexplored reaction pathways and mechanisms, and to establish their significance in, e.g. radiotherapy and radiation damage on the nanoscale, astrophysics, astrochemistry and atmospheric science., Published by Springer, Heidelberg

Published
2021
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2. The Auger spectra in argon induced by electron impact – new measurements with high resolution

Author

Jozo J. Jureta, Bratislav P. Marinković, and Lorenzo Avaldi

Subjects
Materials science, Argon, chemistry.chemical_element, 02 engineering and technology, Plasma, 021001 nanoscience & nanotechnology, Kinetic energy, 01 natural sciences, Atomic and Molecular Physics, and Optics, Spectral line, Auger, chemistry, Ionization, 0103 physical sciences, Spettroscopia Auger, Atomic physics, 010306 general physics, 0210 nano-technology, Electrostatic analyzer, Electron ionization
Abstract

The Auger spectrum of argon in the kinetic energy region (135-235 eV) has been measured using a non-monochromatic electron beam (incident energy from 313 to 2019 eV) at two ejection angles of 60 degrees and 90 degrees with a high resolution electrostatic analyzer. The electron impact energies of 313 and 323 eV have been used in order to disentangle the contribution of the ionization and decay of the 2s state. The systematic analysis of the measured spectra shows the dominance of the Coster-Kronig transitions from the 2s ionization in the energy region 135-159 eV and 208-235 eV, while the Auger transitions from the 2p ionization are dominant in the energy region 160-208 eV. The high resolution of the present work led to the observation of a certain number of new features in two energy regions 135-159 and 208-235 eV, respectively. Recent literature data on the cascade Auger processes and threshold formation of Ar2+ satellite states allow the assignment of some of them, while other have been left without assignments. The influence of the PCI effect on the line-shape, width and energy position of the features in the kinetic energy region 200-208 eV has been also investigated and the PCI shift versus excess energy above threshold compared with previous data and theoretical predictions.

Published
2020
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3. Energy and angular analysis of ejected electrons (6–26 eV) from the autoionization regions of argon at incident electron energies 505 and 2018 eV*

Author

Bratislav P. Marinković, Jozo J. Jureta, and Lorenzo Avaldi

Subjects
Physics, Range (particle radiation), Argon, 010401 analytical chemistry, chemistry.chemical_element, Electron, 01 natural sciences, Electron spectroscopy, Molecular physics, Atomic and Molecular Physics, and Optics, Spectral line, 0104 chemical sciences, chemistry, Autoionization, Excited state, 0103 physical sciences, Autoionizing spectra, Atomic physics, 010306 general physics, Excitation
Abstract

High resolution ejected electron spectroscopy has been used to investigate a large number of Ar autoionizing states producing ejected electrons in the energy range from 6 to 26 eV at impact electron energies of 505 and 2018 eV and ejection angles of 40°, 90° and 130°. The full energy range has been divided into three regions which were analyzed separately. In the first one (6–9 eV) the obtained features are identified as the decay of the Ar2+(1D) at 45.11 eV. In the second one (9–14 eV) all features are identified as due to the decay of excited states formed by the excitation of 3s electrons to ns, np and nd subshells. The most prominent features are those arising from the excitation of 3s to nd(3,1D). In this series the 3s3p 63d(1D) state with FWHM of 0.040 eV is used as the calibration point for all measured spectra. In the third energy region (14–26 eV) a large number of features is observed. Most of them are identified as the decay of excited states of the type 3s3p 5 nl and 3s 23p 4 nl n′l′.

Published
2016
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4. Singly and doubly excited states in ejected electron spectra of neon at high incident electron energies

Author

Bratislav P. Marinković, Lorenzo Avaldi, Jozo J. Jureta, and Aleksandar R. Milosavljević

Subjects
Physics, Range (particle radiation), chemistry.chemical_element, Electron, Electron spectroscopy, Molecular physics, Atomic and Molecular Physics, and Optics, Spectral line, Neon, chemistry, Excited state, Ionization, Atomic physics, Excitation
Abstract

Ejected electron spectroscopy has been used to study singly and doubly excited states of neon at constant incident electron energies between 505 and 2018 eV and ejection angles from 10° to 130° with high resolution in ejected energy range from 12 to 46 eV. The full ejected electron energy range has been studied at two extreme incidence energies and three ejected angles, namely 40°, 90° and 130°. The low energy region (12 to 21.5 eV) has been investigated at 505 eV over the full angular range and at 90° at six incident energies from 505 to 2018 eV. The features in the ejected electron spectra have been attributed to the autoionisation of Ne+ (2s2p 6 nl) excited states and Ne (2s2p 5 nl n′l′ and 2s 22p 4 nl n′l′) double excited autionising states. Lower energy ejected electrons arise from simultaneous excitation of s and p electrons above the second ionisation potential (62.53 eV) while higher energy ejected electrons are coming from singly and doubly excited states. The high resolution and high sensitivity allowed us to see separated singlet from triplet states at high incident energies. Comparison with previous works gives a good agreement in energy positions of measured features. At the highest ejected electron energies only the features coming from double excitation are present, but with very low intensities in the spectra due to the small cross sections and high background. New resonances are found whose classification needs new experimental and theoretical investigations.

Published
2015
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5. Insights into 2-Chloropyrimidine fragmentation through a thermochemical analysis of the ionic fragments

Author

Antonella Cartoni, Paola Bolognesi, Daniele Catone, Annarita Casavola, Lorenzo Avaldi, Mattea Carmen Castrovilli, and Patrick O'Keeffe

Subjects
synchrotron radiation, Chemistry, Ab initio, Optical physics, Radiosensitizers, appearance energy, ion chemistry, Ionic bonding, Appearance energy, Atomic and Molecular Physics, and Optics, Standard enthalpy of formation, Ion, Fragmentation (mass spectrometry), Chemical physics, Molecule
Abstract

In the present work we have studied the photoinduced ion chemistry of the 2Cl-pyrimidine molecule in the energy region 9-14 eV. The theoretical gas phase enthalpies of formation of the main fragments calculated using the G3B3 and G2 ab initio methods are compared to the experimental values, derived by the measured appearance energy of the fragments. This approach provides new insights into both the geometric structure of the ionic fragments and the basic mechanisms governing the molecular fragmentation.

Published
2014
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