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Author : Yonghao Mi
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (1 download)
Download or read book Strong-field Ionization of Atoms and Molecules with Two-color Laser Pulses written by Yonghao Mi and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yunquan Liu
Publisher : World Scientific
ISBN 13 : 9814696404
Total Pages : 248 pages
Book Rating : 4.8/5 (146 download)
Download or read book Advances Of Atoms And Molecules In Strong Laser Fields written by Yunquan Liu and published by World Scientific. This book was released on 2015-09-29 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents the latest advancements and future perspectives of atomic, molecular and optical (AMO) physics and its vital role in modern sciences and technologies. The chapters are devoted to a wide range of quantum systems, with an emphasis on the understanding of ionization, high-harmonic generation, molecular orbital imaging and coherent control phenomena originating from light-matter interactions. The book overviews current research landscape and highlight major scientific trends in AMO physics interfacing with interdisciplinary sciences. It may be particularly interesting for young researchers working on establishing their scientific interests and goals.
Author : Slawomir Skruszewicz
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)
Download or read book Strong Field Ionization of Atoms and Molecules Studied by Phase-of-the-phase Spectroscopy written by Slawomir Skruszewicz and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dimitri Batani
Publisher : Springer Science & Business Media
ISBN 13 : 1461513510
Total Pages : 409 pages
Book Rating : 4.4/5 (615 download)
Download or read book Atoms, Solids, and Plasmas in Super-Intense Laser Fields written by Dimitri Batani and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recent developement of high power lasers, delivering femtosecond pulses of 20 2 intensities up to 10 W/cm , has led to the discovery of new phenomena in laser interactions with matter. At these enormous laser intensities, atoms, and molecules are exposed to extreme conditions and new phenomena occur, such as the very rapid multi photon ionization of atomic systems, the emission by these systems of very high order harmonics of the exciting laser light, the Coulomb explosion of molecules, and the acceleration of electrons close to the velocity of light. These phenomena generate new behaviour of bulk matter in intense laser fields, with great potential for wide ranging applications which include the study of ultra-fast processes, the development of high-frequency lasers, and the investigation of the properties of plasmas and condensed matter under extreme conditions of temperature and pressure. In particular, the concept of the "fast ignitor" approach to inertial confinement fusion (ICF) has been proposed, which is based on the separation of the compression and the ignition phases in laser-driven ICF. The aim of this course on "Atom, Solids and Plasmas in Super-Intense Laser fields" was to bring together senior researchers and students in atomic and molecular physics, laser physics, condensed matter and plasma physics, in order to review recent developments in high-intensity laser-matter interactions. The course was held at the Ettore Majorana International Centre for Scientific Culture in Erice from July 8 to July 14,2000.
Author : Cong-Zhang Gao
Publisher :
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.:/5 (985 download)
Download or read book Ionization Dynamics of Atoms and Molecules Subject to Intense Laser Pulses from Femtoseconds to Attoseconds written by Cong-Zhang Gao and published by . This book was released on 2016 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: The investigation of ionization dynamics of atoms and molecules illuminated with intense laser fields has attracted a great of interest in many disciplines over the decades. In this context, experiments of laser-matter interaction on the exploration of underlying mechanisms are considerably expanding with the advent of ultrashort femtosecond and attosecond laser pulses. However, the description of the laser irradiation process from a theoretical perspective is still a challenge, in particular for complex systems, such as the fullerene C60. To that end, we turn to exploit a fully fledged approach "Time-Dependent Density-Functional Theory (TDDFT)" to describe electron emission induced by a broad range of laser pulses from weak to strong and from femtoseconds to attoseconds. The first part of the thesis contributes to the study of ionization dynamics of C60 irradiated by femtosecond laser pulses. Three ionization mechanisms, single-photon ionization, multi-photon ionization, and strong-field ionization, are extensively explored via photoelectron spectra (PES) and photoelectron angular distribution (PAD). Our analysis shows that for single-photon ionization, the PES basically reveal the occupied single-particle states which can be associated with the orbital depletion, and the PAD can be generalized into the anisotropy parameter which sensitively depends on the electronic states instead of the photon frequency. For multi-photon ionization, the PES are mostly generated by few uppermost orbitals, and the PAD reveal larger anisotropy with the increase of photon order. For strong-field ionization, the PES are featured by an extended plateau at high energies due to electron recollisions, and the delicate pattern on the plateau is analyzed by using a three-step model. The PAD of the high-energy electrons shows a strong alignment along the laser polarization, which is promising to generate a highly collimated electron beam. Moreover, we also discuss temperature effects from ionic motion on the PES and PAD. The second part of the work focuses on the ionization dynamics of simple atoms and molecules subject to extreme ultraviolet (XUV) attosecond pulses in the presence of an infrared (IR) field. Using similar laser parameters as experiments, we find that for He atom it leads to subcycle ionization on the attosecond time scale depending on the delay time between IR and XUV pulses, while for Ar atom this is absent. To better understand it, we make a systematic study on the effect of key laser parameters in the IR regime. Our results reveal that IR laser intensity and XUV frequency are decisive parameters. We further study resonance effects on electron emission in Na2 molecule, and we find that ionization pattern can be related to either IR laser frequency or the eigenfrequency of the system. We then extend it to the mid-IR (MIR) regime, where more complex ionization patterns are observed. Finally, we develop a schematic model accounting for electron emission in two-color laser field, and an analytical solution of ionization probability is also obtained, which well explains the main characteristics of the ionization pattern.
Author : Christian Per Juul Martiny
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (866 download)
Download or read book Strong-field Ionization of Atoms and Molecules by Short Femtosecond Laser Pulses written by Christian Per Juul Martiny and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Vadim Kostrykin
Publisher :
ISBN 13 :
Total Pages : 19 pages
Book Rating : 4.:/5 (757 download)
Download or read book Ionization of Atoms and Molecules by Short Strong Laser Pulses written by Vadim Kostrykin and published by . This book was released on 1995 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Andre D. Bandruk
Publisher : Springer Science & Business Media
ISBN 13 : 1461309670
Total Pages : 460 pages
Book Rating : 4.4/5 (613 download)
Download or read book Atomic and Molecular Processes with Short Intense Laser Pulses written by Andre D. Bandruk and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the lectures and communications presented at the NATO Advanced Research Workshop on "Atomic and Molecular Processes with Short Intense Laser Pulses" (NATO ARW 848/86). The workshop was held at Bishop's University, Lennoxville, Que, Canada, July 19-24, 1987, under the directorship of Prof. A.D. Bandrauk, Universite de Sherbrooke. A scientific committee made up of Dr. P. Corkum (Laser Physics, ~ational Research Council of Canada), Dr. P. Hackett (Laser Chemistry, National Research Council of Canada), Prof. S.C. Wallace (Dept. of Chemistry and Physics, University of Toronto), and Prof. F.H.M. Faisal (FakultHt fUr Physik, UniversitHt Bellefeld) was called upon to invite and organize eminent lectures in the fields of i) Coherence Phenomena in Atomic and Molecular Photoprocesses. ii) High Intensity Atomic and Molecular Phenomena. iii) Laser Chemistry The aim of the workshop was to bring together chemists and physicists in order to~iscuss and analyze the progress made in the use of short in tense laser pulses in understanding coherence phenomena and high intensity, nonlin~adiative effects in atomic and molecular systems.
Author : Kaoru Yamanouchi
Publisher : Springer
ISBN 13 : 3319648403
Total Pages : 234 pages
Book Rating : 4.3/5 (196 download)
Download or read book Progress in Ultrafast Intense Laser Science XIII written by Kaoru Yamanouchi and published by Springer. This book was released on 2017-12-22 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thirteenth volume in the PUILS series covers a broad range of topics from this interdisciplinary research field, focusing on atoms, molecules, and clusters interacting in intense laser field and high-order harmonics generation and their applications. The series delivers up-to-date reviews of progress in ultrafast intense laser science, the interdisciplinary research field spanning atomic and molecular physics, molecular science, and optical science, which has been stimulated by the developments in ultrafast laser technologies. Each volume compiles peer-reviewed articles authored by researchers at the forefront of each their own subfields of UILS. Typically, each chapter opens with an overview of the topics to be discussed, so that researchers unfamiliar to the subfield, as well as graduate students, can grasp the importance and attractions of the research topic at hand; these are followed by reports of cutting-edge discoveries.
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309102707
Total Pages : 245 pages
Book Rating : 4.3/5 (91 download)
Download or read book Controlling the Quantum World written by National Research Council and published by National Academies Press. This book was released on 2007-06-21 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of the Physics 2010 decadal survey project, the Department of Energy and the National Science Foundation requested that the National Research Council assess the opportunities, over roughly the next decade, in atomic, molecular, and optical (AMO) science and technology. In particular, the National Research Council was asked to cover the state of AMO science, emphasizing recent accomplishments and identifying new and compelling scientific questions. Controlling the Quantum World, discusses both the roles and challenges for AMO science in instrumentation; scientific research near absolute zero; development of extremely intense x-ray and laser sources; exploration and control of molecular processes; photonics at the nanoscale level; and development of quantum information technology. This book also offers an assessment of and recommendations about critical issues concerning maintaining U.S. leadership in AMO science and technology.
Author : C. D. Lin
Publisher : Cambridge University Press
ISBN 13 : 1107197767
Total Pages : 419 pages
Book Rating : 4.1/5 (71 download)
Download or read book Attosecond and Strong-Field Physics written by C. D. Lin and published by Cambridge University Press. This book was released on 2018-05-10 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introductory textbook on attosecond and strong field physics, covering fundamental theory and modeling techniques, as well as future opportunities and challenges.
Author : Wei Lai
Publisher :
ISBN 13 :
Total Pages : 147 pages
Book Rating : 4.:/5 (999 download)
Download or read book Ionization and Dissociation Dynamics of Molecules in Strong Laser Fields written by Wei Lai and published by . This book was released on 2016 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The fast advancement of ultrashort-pulsed high-intensity laser technology allows for generating an electric field equivalent to the Coulomb field inside an atom or a molecule (e.g., Ec=5.14x109 V/cm at the 1s orbit radius a0=0.0529 nm of the hydrogen atom, which corresponds to an intensity of 3.54x1016 W/cm2). Atoms and molecules exposed in such a field will easily be ionized, as the external field is strong enough to remove the electrons from the core. This is usually referred to "strong field". Strong fields provide a new tool for studying the interaction of atoms and molecules with light in the nonlinear nonperturbative regime. During the past three decades, significant progress has been made in the strong field science. Today, most phenomena involving atoms in strong fields have been relatively well understood by the single-active-electron (SAE) approximation. However, the interpretation of these responses in molecules has encountered great difficulties. Not like atoms that only undergo excitation and ionization, various dissociation channels accompanying excitation and ionization can occur in molecules during the laser pulse interaction, which imparts further complexity to the study of molecules in strong fields. Previous studies have shown that molecules can behave significantly different from rare gas atoms in phenomena as simple as single and double ionization. Molecular dissociation following ionization also presents challenges in strong fields compared to what we have learned in the weak-field regime. This dissertation focuses on experimental studies on ionization and dissociation of some commonly-seen small molecules in strong laser fields. Previous work of molecules in strong fields will be briefly reviewed, particularly on some open questions about multiple dissociation channels, nonsequential double ionization, enhanced ionization and molecular alignment. The identification of various molecular dissociation channels by recent experimental technical upgrades will be shown. The study of enhanced ionization in small molecules by time-resolved pump-probe experiments and varying-pulse duration experiments will be discussed, followed by an investigation of molecular alignment effect in sequential and nonsequential dynamics. At last, selective charge separation in charge asymmetric dissociation of heteronuclear diatomic molecules will be shown and conclusion and future work will be discussed."--Pages vii-viii.
Author : Corneliu Manescu
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783838310633
Total Pages : 180 pages
Book Rating : 4.3/5 (16 download)
Download or read book Controlling/Probing Atoms and Molecules with Ultrafast Laser Pulses written by Corneliu Manescu and published by LAP Lambert Academic Publishing. This book was released on 2009-09 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in the ultrashort laser technology have spawned a series of new directions of research in atomic and molecular physics. This work compounds two studies on the control and probing of atomic matter by ultrafast laser pulses. The first study is concerned with the control of quantum wavepackets focusing by chirped, ultrashort laser pulses. The ability to control wavepacket focusing is important for the achievement of specific excitation pathways, for controlling chemical reactivity or even molecular synthesis. In this work, we present a general method for wavepacket control in the weak field limit. Numerical simulations involving the ICN molecule confirm our theoretical framework. The second study refers to the ionization of sodium Rydberg states via half-cycle pulses (HCPs). For this process, our full quantum-mechanical calculations demonstrate an asymmetry in both ionization rates and ionization spectrum between the downhill (Stark red-shifted) and uphill (Stark blue- shifted) states. The asymmetry is explained by appealing to a semi-classical model of the interfering ionization pathways.
Author : Mihai Gavrila
Publisher :
ISBN 13 :
Total Pages : 542 pages
Book Rating : 4.:/5 (318 download)
Download or read book Atoms in Intense Laser Fields written by Mihai Gavrila and published by . This book was released on 1992 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: For graduate students, laser scientists, atomic, molecular and optical physicists, topics include the effects of superintense laser fields on multiphoton ionization and harmonic generation; novel effects with ultrashort, subpicosecond laser pulses; and Rydberg atoms in intense microwave fields.
Author : Lutz Fechner
Publisher : Springer
ISBN 13 : 3319320467
Total Pages : 158 pages
Book Rating : 4.3/5 (193 download)
Download or read book High-Resolution Experiments on Strong-Field Ionization of Atoms and Molecules written by Lutz Fechner and published by Springer. This book was released on 2016-04-26 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, the ionization of atoms and small molecules in strong laser fields is experimentally studied using a reaction microscope. The population of autoionizing doubly excited states in the laser fields is proven and a possible connection to the well-known dielectronic recombination processes is discussed. The fundamental process of tunnel ionization in strong laser fields is subject of investigation in a pump-probe experiment with ultrashort laser pulses. A coherent superposition of electronic states in singly charged argon ions is created within the first, and subsequently tunnel-ionized with the second pulse. This gives access to state-selective information about the tunneling process and allows to test common models. Moreover, the ionization of krypton and argon at different wavelengths is studied, from the multiphoton to the tunneling regime. The wavelength-dependent investigations are furthermore extended to molecular hydrogen. In addition to ionization, this system might undergo different dissociative processes. Channel-selective electron momentum distributions are presented and compared to each other.
Author : Donald G. Truhlar
Publisher : Springer Science & Business Media
ISBN 13 : 1461218705
Total Pages : 405 pages
Book Rating : 4.4/5 (612 download)
Download or read book Multiparticle Quantum Scattering with Applications to Nuclear, Atomic and Molecular Physics written by Donald G. Truhlar and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is based on the outcome of a workshop held at the Institute for Mathematics and Its Applications. This institute was founded to promote the interchange of ideas between applied mathematics and the other sciences, and this volume fits into that framework by bringing together the ideas of mathematicians, physicists and chemists in the area of multiparticle scattering theory. The correct formulation of scattering theory for two-body collisions is now well worked out, but systems with three or more particles still present fundamental challenges, both in the formulations of the problem and in the interpretation of computational results. The book begins with two tutorials, one on mathematical issues, including cluster decompositions and asymptotic completeness in N-body quantum systems, and the other on computational approaches to quantum mechanics and time evolution operators, classical action, collisions in laser fields and in magnetic fields, laser-induced processes, barrier resonances, complex dilated expansions, effective potentials for nuclear collisions, long-range potentials, and the Pauli Principle.
Author : Ryan Murray
Publisher :
ISBN 13 :
Total Pages : 96 pages
Book Rating : 4.:/5 (827 download)
Download or read book Tunnel Ionization in Strong Fields in Atoms and Molecules and Its Applications written by Ryan Murray and published by . This book was released on 2011 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: We look at the theory of ionization of atoms and molecules in the presence of a strong laser field. The history of ionization of atoms is reviewed and the methods used to calculate the ionization rates are examined in detail. In particular the quasi-classical methods used to solve for atomic rates are examined in detail. Early work on the ionization of molecules is also examined. A new method of calculating ionization rates is developed which allows for clear, analytic descriptions of atoms and molecules in intense light fields. The results and implications of this new theory are also examined in both atoms and molecules. The results are compared against known analytic results in the case of atoms and against numerical computation for molecules. Finally, applications of the study of atoms and molecules in intense fields are examined. We show how processes such as high harmonic generation and laser induced electron diffraction occur in strong fields and give an overview of the current state of the art and likely goals for the future. The process of laser induced electron diffraction is given close examination and ways of optimizing the diffraction patterns are discussed. The use of two-color orthogonal fields is shown to greatly increase contrast and efficiency when the carrier phases are tuned correctly.
