Academic literature on the topic 'Charge excitations'

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Journal articles on the topic "Charge excitations"

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Dressel, M., N. Drichko, and S. Kaiser. "Collective charge-order excitations." Physica C: Superconductivity and its Applications 470 (December 2010): S589—S591. http://dx.doi.org/10.1016/j.physc.2009.10.116.

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Sagawa, Hiroyuki. "Single and Double Charge Exchange Excitations of Spin-Isospin Mode." EPJ Web of Conferences 223 (2019): 01053. http://dx.doi.org/10.1051/epjconf/201922301053.

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We study the sum rules of double Gamow-Teller (DGT) excitations through double spin-isospin operator (σt­)2 In general, 2+states in the granddaughter nuclei have dominant transition strength in DGT excitations and 0+states are weak, except in T = 1 mother nuclei in which 0+strength is competitive with 2+strength. A possibility to extract the unit cross section for the DGT transition strength is pointed out in the (#x03C3;t­)2 excitation of double isobaric analog state (DIAS) in T = 1 nuclei.
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Freeman, P. G., S. M. Hayden, C. D. Frost, D. Prabhakaran, and A. T. Boothroyd. "Magnetic excitations of charge-ordered." Journal of Magnetism and Magnetic Materials 310, no. 2 (2007): 760–62. http://dx.doi.org/10.1016/j.jmmm.2006.10.488.

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Thalmeier, P., and A. N. Yaresko. "Magnetic excitations in charge ordered." European Physical Journal B 14, no. 3 (2000): 495. http://dx.doi.org/10.1007/s100510051058.

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Thalmeier, P., and A. N. Yaresko. "Magnetic excitations in charge ordered." European Physical Journal B 14, no. 3 (2000): 495–508. http://dx.doi.org/10.1007/pl00011054.

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Malcioglu, Baris, and Onur Pusuluk. "(Digital Presentation) Using Quantum Information Theory to Quantitatively Distinguish between Resonant Energy Transfer and Charge Transfer Interactions in Porphyrin Crystals." ECS Meeting Abstracts MA2024-01, no. 14 (2024): 1163. http://dx.doi.org/10.1149/ma2024-01141163mtgabs.

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Quantum discord is a concept in quantum information theory that measures the quantum correlations between two subsystems in a system. Unlike traditional measures of quantum entanglement, quantum discord captures all types of quantum correlations, including those that do not necessarily involve entanglement. It quantifies the information that is lost when measuring one subsystem. The GW formalism is a powerful theoretical framework for calculating electronic excitation energies and quasiparticle properties in condensed matter systems. The GW formalism can be used to calculate a variety of elect
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Moore, Barry, Haitao Sun, Niranjan Govind, Karol Kowalski, and Jochen Autschbach. "Charge-Transfer Versus Charge-Transfer-Like Excitations Revisited." Journal of Chemical Theory and Computation 11, no. 7 (2015): 3305–20. http://dx.doi.org/10.1021/acs.jctc.5b00335.

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Senaratne, Ruwan, Danyel Cavazos-Cavazos, Sheng Wang, et al. "Spin-charge separation in a one-dimensional Fermi gas with tunable interactions." Science 376, no. 6599 (2022): 1305–8. http://dx.doi.org/10.1126/science.abn1719.

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Ultracold atoms confined to periodic potentials have proven to be a powerful tool for quantum simulation of complex many-body systems. We confine fermions to one dimension to realize the Tomonaga-Luttinger liquid model, which describes the highly collective nature of their low-energy excitations. We use Bragg spectroscopy to directly excite either the spin or charge waves for various strengths of repulsive interaction. We observe that the velocity of the spin and charge excitations shift in opposite directions with increasing interaction, a hallmark of spin-charge separation. The excitation sp
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Mijoule, Claude, Jean-Marie Leclercq, Michel Comeau, Sándor Fliszár, and Maud Picard. "Charge distributions and chemical effects. XLVII. Density matrix contribution to the charge distribution in hydrocarbons, arising from singly excited configurations in CI calculations." Canadian Journal of Chemistry 70, no. 1 (1992): 68–73. http://dx.doi.org/10.1139/v92-013.

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The involvement of excited configurations in Mulliken charge analyses is examined for ethylene and acetylene, using an optimized 4-31G basis. The net charges of carbon, −346.4 × 10−3 (C2H4) and −335.3 × 10−3 e (C2H2) at the SCF level, are reduced to −269.9 × 10−3 and −271.2 × 10−3 e, respectively. Double excitations appear to contribute little to these corrections. In acetylene, three single σ → σ* type excitations are responsible for ~83% of the charge correction whereas, as expected, the role of π → π* type excitations is small. Similarly, four σ → σ* configurations account for ~76% of the c
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Kushwaha, Manvir S. "Charge density excitations in semiconductor superlattices." Journal of Applied Physics 62, no. 5 (1987): 1895–901. http://dx.doi.org/10.1063/1.339577.

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Dissertations / Theses on the topic "Charge excitations"

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Waidacher, Christoph. "Charge properties of cuprates: ground state and excitations." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2000. http://nbn-resolving.de/urn:nbn:de:swb:14-998985918593-73513.

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This thesis analyzes charge properties of (undoped) cuprate compounds from a theoretical point of view. The central question considered here is: How does the dimensionality of the CU-O sub-structure influence its charge degrees of freedom? The model used to describe the Cu-O sub-structure is the three- (or multi-) band Hubbard model. Analytical approaches are employed (ground-state formalism for strongly correlated systems, Mori-Zwanzig projection technique) as well as numerical simulations (Projector Quantum Monte Carlo, exact diagonalization). Several results are compared to experimental dat
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Waidacher, Christoph. "Charge properties of cuprates: ground state and excitations." Doctoral thesis, Technische Universität Dresden, 1999. https://tud.qucosa.de/id/qucosa%3A24786.

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This thesis analyzes charge properties of (undoped) cuprate compounds from a theoretical point of view. The central question considered here is: How does the dimensionality of the CU-O sub-structure influence its charge degrees of freedom? The model used to describe the Cu-O sub-structure is the three- (or multi-) band Hubbard model. Analytical approaches are employed (ground-state formalism for strongly correlated systems, Mori-Zwanzig projection technique) as well as numerical simulations (Projector Quantum Monte Carlo, exact diagonalization). Several results are compared to experimental dat
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Lorin, Arnaud. "Electronic properties of silver chloride : influence of excitons on the charge dynamics." Thesis, Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAX087.

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En 1848, Edmond Becquerel proposa une des toutes premières techniques de photographie en couleur. Ce procédé suscita parmi la communauté scientifique de nombreux débats sur l'origine des couleurs observées. En 2019, Victor de Seauve, dans une thèse au Muséum National d'Histoire Naturelle à Paris, a apporté de nombreuses clarifications, proposant une nouvelle explication. Le facteur clé de cette explication est la dynamique des charges, en réaction à la lumière, dans un composé de chlorure d'argent (AgCl) qui contient des nanoparticules d'argent. L'objectif de la présente thèse est de participe
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Liang, H. "Nuclear charge-exchange excitations in a self-consistent covariant approach." Phd thesis, Université Paris Sud - Paris XI, 2010. http://tel.archives-ouvertes.fr/tel-00506913.

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Les excitations d'´echange de charge dans les noyaux constituent l'un des sujets importants et actuels en physique nucl´eaire et en astrophysique. En principe, une connaissance syst´ematique de l'´evolution du comportement de ces excitations `a travers la table des ´el´ements fournirait des informations directes sur les propri´et´es en spin et isospin de l'interaction entre nucl´eons dans le milieu nucl´eaire, et sur l'´equation d'´etat de la mati`ere nucl´eaire. Par ailleurs, une quantit´e d'importance essentielle pour la structure des noyaux, l'´epaisseur de la peau de neutrons, peut ˆetre d
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Rubio, Pons Oscar. "Charge-transfer excitations and phtophysical properties of molecular building blocks." Doctoral thesis, KTH, Teoretisk kemi (stängd 20110512), 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-184.

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This thesis reports a state-of-the-art theoretical study of photophysical properties of organic charge-transfer aromatic molecules. These molecules are building blocks of molecular functional materials used in modern photonics technology and play essential roles in chemistry and biology in general. A good understanding of these systems is thus important. The theoretical results for permanent dipole moments of some substituted benzenes have been obtained using the coupled cluster singles and doubles (CCSD) method. The performance of density functional theory (DFT) for the geometry and electroni
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Rubio, Pons Óscar. "Charge-transfer excitations and photophysical properties of molecular building blocks /." Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-184.

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Liang, Haozhao. "Nuclear charge-exchange excitations in a self-consistent covariant approach." Paris 11, 2010. http://www.theses.fr/2010PA112178.

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Les excitations d'échange de charge dans les noyaux constituent l'un des sujets importants et actuels en physique nucléaire et en astrophysique. En principe, une connaissance systématique de l'évolution du comportement de ces excitations à travers la table des éléments fournirait des informations directes sur les propriétés en spin et isospin de l'interaction entre nucléons dans le milieu nucléaire, et sur l'équation d'état de la matière nucléaire. Par ailleurs, une quantité d'importance essentielle pour la structure des noyaux, l'épaisseur de la peau de neutrons, peut être déterminée par la r
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Tegomo, Chiogo Bodry. "Spectroscopic studies of cerium and Ytterbium-based Kondo systems." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0193.

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Les composés de cérium et d'ytterbium sont des systèmes qui présentent des propriétés magnétiques, électroniques et thermodynamiques exceptionnelles à basse température, tels que l'effet Kondo, les fermions lourds, la valence intermédiaire et des ondes de densité de charge. Ces propriétés sont dues aux interactions électron-électron très fortes des états f et à l'hybridation des états f avec les électrons de conduction. Dans la première partie de ce travail de thèse, nous étudions la structure électronique de l'YbPd, un composé cubique à haute température, qui présente des ondes de densité de
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Falck, Jens Petter. "Polaronic charge carriers and their optical excitations in insulating La₂CuO₄₊y̳." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/12450.

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Few, Sheridan. "Theoretical studies of charge transfer excitations, absorption, and polarisation in organic photovoltaic materials." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/33284.

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To optimise organic photovoltaic devices, design rules relating chemical and physical structure to the ability of the active material to absorb light, separate charges and transport charges, are required. We assess the predictive power of computational modelling techniques, comparing results with experiment. In Chapter 4, we calculate the influence of chemical structure on conformation and light absorption in conjugated polymers, and explain the remarkably high optical absorption in poly-thieno[3,2b]-thiophene-diketo-pyrrolopyrrole-co-thiophene (PDPP-TT-T) in terms of its high persistence leng
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Books on the topic "Charge excitations"

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1934-, Okiji A., Makoshi K. 1948-, Kasai H. 1952-, and Taniguchi International Symposium on the Theory of Condensed Matter (18th : 1996 : Kashikojima, Japan), eds. Elementary processes in excitations and reactions on solid surfaces: Proceedings of the 18th Taniguchi Symposium, Kashikojima, Japan, January 22-27, 1996. Springer, 1996.

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Baldassare, Di Bartolo, Chen Xuesheng, and International School of Atomic and Molecular Spectroscopy (1999 : Erice, Italy), eds. Advances in energy transfer processes: Proceedings of the 16th course of the International School of Atomic and Molecular Spectroscopy, Erice, Sicily, Italy, 17 June-1 July, 1999. World Scientific, 2001.

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Schopper, H., ed. Tables of Excitations from Reactions with Charged Particles. Part 3: Z = 63 - 99. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-48701-2.

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Schopper, H., ed. Tables of Excitations from Reactions with Charged Particles. Part 2: Z = 37 - 62. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-44713-9.

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Schopper, H., ed. Tables of Excitations from Reactions with Charged Particles. Part 1: Z = 3 - 36. Springer-Verlag, 2006. http://dx.doi.org/10.1007/b104820.

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1946-, Nasu K., ed. Photoinduced phase transitions. World Scientific Pub.Co., 2004.

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Ansermet, J. Ph. Spintronics with metallic nanowires. Edited by A. V. Narlikar and Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533060.013.3.

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This article focuses on spintronics with metallic nanowires. It begins with a review of the highlights of spintronics research, paying attention to the very important developments accomplished with tunnel junctions. It then considers the effect of current on magnetization before discussing spin diffusion and especially spin-dependent conductivities, spin-diffusion lengths, and spin accumulation. It also examines models for spin-polarized currents acting on magnetization, current-induced magnetization switching, and current-driven magnetic excitations. It concludes with an overview of resonant-
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Ieda, J., and S. Maekawa. Spinmotive force. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198787075.003.0007.

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This chapter begins with Faraday’s law, which states that electromotive forces power everything by virtue of the charge e of an electron, and introduces spinmotive forces which reflect the magnetic moment of an electron. This motive force reflects the energy conservation requirements of the spin-torque transfer process that is at the heart of spintronics. The Stern-Gerlach experiment that used spin-dependent forces established the existence of spin. It is shown here that conservative forces would exist even if an electron was not charged, and do exist for uncharged excitations, such as magnons
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(Editor), Ayao Okiji, Hideaki Kasai (Editor), and Kenji Makoshi (Editor), eds. Elementary Processes in Excitations and Reactions on Solid Surfaces: Proceedings of the 18th Taniguchi Symposium Kashikojima, Japan, January 22-27, 1996 (Springer Series in Solid-State Sciences). Springer, 1996.

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Oleg, Kirichek, ed. Edge excitations of low-dimensional charged systems. 2001.

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Book chapters on the topic "Charge excitations"

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Mäntele, W. "Energy and charge transfer in photosynthesis." In Nonlinear Excitations in Biomolecules. Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-662-08994-1_23.

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Overhauser, A. W. "Phase Excitations of Charge Density Waves." In Anomalous Effects in Simple Metals. Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527631469.ch29.

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Mezhov-Deglin, Leonid P., and Andrey I. Golov. "Charge Motion in Solid Helium." In Excitations in Two-Dimensional and Three-Dimensional Quantum Fluids. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4684-5937-1_39.

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Suhonen, Jouni. "Charge-Changing Particle-Hole Excitations and the pnTDA." In Theoretical and Mathematical Physics. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-48861-3_10.

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Bishop, A. R. "Phonons and Charge-Transfer Excitations in High-Temperature Superconductors." In Springer Series in Solid-State Sciences. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-84377-8_23.

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Boriack, M. L., and A. W. Overhauser. "Attenuation of Phase Excitations in Charge-Density Wave Systems." In Anomalous Effects in Simple Metals. Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527631469.ch31.

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White, C. T., M. R. Cook, B. I. Dunlap, et al. "Virtual Symmetric Charge Transfer Superconducting Pairing Excitations in C60." In Physics and Chemistry of Finite Systems: From Clusters to Crystals. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-017-2645-0_195.

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Freeman, A. J., S. Massidda, and Jaejun Yu. "Bonds, Bands, Charge-Transfer Excitations, and High-Temperature Superconductivity." In ACS Symposium Series. American Chemical Society, 1988. http://dx.doi.org/10.1021/bk-1988-0377.ch006.

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Yu, Jaejun, A. J. Freeman, and S. Massidda. "Bonds, Bands, Charge Transfer Excitations and Superconductivity: YBa2Cu3O7−δ vs. YBa2Cu3O6." In Novel Superconductivity. Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1937-5_39.

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Luty, T. "Neutral-to-Ionic Transformation as Condensation and Solidification of Charge-Transfer Excitations." In Springer Series in Solid-State Sciences. Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60702-8_15.

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Conference papers on the topic "Charge excitations"

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Anders, D., M. Stein, and S. Chatterjee. "Interplay of near band-edge excitations with unbound charge-carriers." In CLEO: Fundamental Science. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_fs.2024.fw3i.2.

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Electron-exciton scattering in semiconductor quantum wells is investigated by ultrafast optical pump-terahertz probe spectroscopy. The energy of the electron-hole plasma is varied, revealing a strong energy dependence of elastic and inelastic scattering.
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Murakami, Yuta, Kento Uchida, Shintaro Takayoshi, Akihisa Koga, Koichiro Tanaka, and Philipp Werner. "High-Harmonic Generation in Strongly Correlated Insulators." In Laser Science. Optica Publishing Group, 2024. https://doi.org/10.1364/ls.2024.lm5f.1.

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We discuss the physics of high-harmonic generation in the Mott insulator, a standard strongly correlated state. We reveal the important role of many-body elemental excitations as well as correlations between charge and spin.
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Chin, S. L., W. Xiong, and P. Lavigne. "Multiple Charges Creation (Up to Xe6+) from Xe atoms by An Intense CO2 Laser*." In Multiple Excitations of Atoms. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/mea.1986.mc2.

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Experiments in recent years have shown that using an intense laser beam of intensities of more than 1013 W/cm2 (up to 1016 W/cm2) multiply charged ions of rare gas atoms were created with relative ease. The wavelengths of the lasers ranged from the infrared1,2 through the near i.r.3 and visible3 to the u.v.4. Most of the data indicated that a step-wise multiphoton process was responsible for the multiple charge creation.
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Nieminen, R. M. "Excitations, charge transfer and trapping." In 4th International workshop on: Slow−positron beam techniques for solids and surfaces. AIP, 1991. http://dx.doi.org/10.1063/1.40176.

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Luk, T. S., H. Jara, U. Johann, et al. "Subpicosecond Ultraviolet Multiphoton Electron Spectroscopy of Rare Gases*." In Multiple Excitations of Atoms. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/mea.1986.mc3.

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Recent advances in high power laser development have enabled field strengths comparable to the atomic binding field to be generated. This experimental achievement has stimulated considerable interest in the study of the nature of multiphoton processes. Previously reported results of photoelectron spectra using 10 ps, 193 nm radiation1 have shown that the photoionization mechanism for the low charge states is largely a stepwise process and the threshold intensities required to produce the charge states are in reasonable agreement with the Keldysh model. In addition, the effect of the ponderomot
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Clark, Charles W., and Stephen J. Buckman. "Regularities of Negative Ion Resonances." In Multiple Excitations of Atoms. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/mea.1986.tua5.

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The effects of electron correlation in atomic and molecular systems are perhaps most pronounced in negative ions. No long-range Coulomb field is present to bind an additional electron to a parent state of a neutral atom. The stability of a negative ion state is thus usually attributed to one of two alternative mechanisms, both of which invoke electron correlation phenomena: i) polarization of the parent atom provides an attractive potential in which an electron can be weakly bound; ii) two electrons orbit a singly-charged positive ion in a highly correlated fashion, so that each electron is ef
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Chu, Shih-I. "Multiphoton and Above-Threshold Ionization." In Multiple Excitations of Atoms. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/mea.1986.ma7.

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Recently a number of advances have been made regarding the developments of semiclassical Floquet theories for ab initio nonperturbative treatments of intense field multiphoton processes.1,2 These include multiphoton excitation (MPE) and dissociation (MPD) of molecules,1 multiphoton ionization (MPI) of atoms,1 many-mode Floquet theory,1,2 SU(N) dynamic symmetries and symmetry breaking,2 charge exchange in laser fields2 and nonlinear optical processes etc.3
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Agostini, P., G. Petite, and F. Yergeau. "Peak suppression in Above-Threshold-Ionization." In Multiple Excitations of Atoms. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/mea.1986.mb3.

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Recently, the Above-Threshold-Ionization (ATI) phenomenon has received much attention, in particular from theoreticians bringing up models to interpret the suppression of the low-energy part of the electron energy spectrum. In this respect, the reasons why some electron peaks should be suppressed can be classified in three groups: first, intensity effects which modify, in all models, the ATI probabilities and in some of them would induce strong Stark shifts of the ionization limit. Second, polarization effects: it has been proposed that in circular polarization, the high-angular-momentum final
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Jara, H., U. Johann, T. S. Luk, et al. "Multiphoton Excitation and Ionization of Atoms." In Multiple Excitations of Atoms. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/mea.1986.wa1.

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It has been conjectured that atomic motions fundamentally different from those presently observed may be driven under extreme conditions of irradiation. Indeed, it has been suggested1-4 that ordered many-electron motions of outer-shell electrons could lead to enhanced rates of coupling from the radiation field to an atom. In order to study the conditions necessary for new atomic responses to occur and to determine the influence of possible damping mechanisms, the properties of ion charge state distributions,5 electron energy spectra,6 and harmonic radiation7 produced by irradiation of atoms wi
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Leonardi, Renzo. "Charge-exchange collective excitations and sum rules." In AIP Conference Proceedings Volume 163. AIP, 1987. http://dx.doi.org/10.1063/1.36937.

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Reports on the topic "Charge excitations"

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Piotr Piotrowiak. Electronic and Nuclear Factors in Charge and Excitation Transfer. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/832834.

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Sampson, D. H. Excitation and ionization of highly charged ions by electron impact. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/5179867.

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Sampson, D. H. Electron impact collision strengths for excitation of highly charged ions. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/6506503.

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Piotrowiak, P. Electronic and nuclear factors in intramolecular charge and excitation transfer processes. Final report. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/491446.

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Watson, R. L. Excitation of atoms and molecules in collisions with highly charged ions. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/5302309.

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Gorelenkov, N. N., and C. Z. Cheng. Excitation of Alfven Cyclotron Instability by charged fusion products in tokamaks. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/10172222.

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Howell, R. B., R. J. Fonck, R. J. Knize, and K. P. Jaehnig. Corrections to charge exchange spectroscopic measurements in TFTR due to energy-dependent excitation rates. Office of Scientific and Technical Information (OSTI), 1988. http://dx.doi.org/10.2172/6838276.

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Watson, R. Excitation of atoms and molecules in collisions with fast, highly charged ions. Office of Scientific and Technical Information (OSTI), 1988. http://dx.doi.org/10.2172/5218966.

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Sampson, D. H. Relativistic calculations of excitation and ionization of highly charged ions by electron impact. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/6912230.

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Piotrowiak, P. Electronic and nuclear factors in intramolecular charge and excitation transfer processes. [Annual report], October 1992--September 1993. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10122468.

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