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Author: Nebojša Nešković Publisher: Springer ISBN: 3319615246 Category : Science Languages : en Pages : 202
Book Description
This book discusses the effects, modeling, latest results, and nanotechnology applications of rainbows that appear during channeling of charged particles in crystals and nanotubes. The authors begin with a brief review of the optical and particle rainbow effects followed by a detailed description of crystal rainbows, which appear in ion channeling in crystals, and their modeling using catastrophe theory. The effects of spatial and angular focusing of channeled ions are described, with special attention given to the applications of the former effect to subatomic microscopy. The results of a thorough study of the recent high-resolution channeling experiments performed with protons of energies between 2.0 and 0.7 MeV and a 55 nm thick silicon crystal are also provided. This study opens up the potential for accurate analysis of very thin crystals. Also presented are recent results related to rainbows occurring in proton transmission through carbon nanotubes, and a detailed quantum consideration of the transmission of positrons of an energy of 1 MeV through very short carbon nanotubes. This process is determined by the rainbow effect. The initial positron beam is represented as an ensemble of non-interacting Gaussian wave packets, and the principal and supernumerary primary rainbows appearing in the spatial and angular distributions of transmitted positrons are clearly identified. They are explained by the effects of wrinkling, concentration and coordination of the wave packets.
Author: Nebojša Nešković Publisher: Springer ISBN: 3319615246 Category : Science Languages : en Pages : 202
Book Description
This book discusses the effects, modeling, latest results, and nanotechnology applications of rainbows that appear during channeling of charged particles in crystals and nanotubes. The authors begin with a brief review of the optical and particle rainbow effects followed by a detailed description of crystal rainbows, which appear in ion channeling in crystals, and their modeling using catastrophe theory. The effects of spatial and angular focusing of channeled ions are described, with special attention given to the applications of the former effect to subatomic microscopy. The results of a thorough study of the recent high-resolution channeling experiments performed with protons of energies between 2.0 and 0.7 MeV and a 55 nm thick silicon crystal are also provided. This study opens up the potential for accurate analysis of very thin crystals. Also presented are recent results related to rainbows occurring in proton transmission through carbon nanotubes, and a detailed quantum consideration of the transmission of positrons of an energy of 1 MeV through very short carbon nanotubes. This process is determined by the rainbow effect. The initial positron beam is represented as an ensemble of non-interacting Gaussian wave packets, and the principal and supernumerary primary rainbows appearing in the spatial and angular distributions of transmitted positrons are clearly identified. They are explained by the effects of wrinkling, concentration and coordination of the wave packets.
Author: Nikolaĭ Pavlovich Kalashnikov Publisher: CRC Press ISBN: 9783718604548 Category : Science Languages : en Pages : 344
Book Description
Translation of the 1981 Russian edition. On the fundamental aspects of electromagnetic interactions of beams of fast charged particles with solids and solid surfaces. Provides a unified treatment of scattering and radiation processes associated with the strong interactions of fast-charged particles and single crystals. Discusses a broad range of electromagnetic phenomena including: relativistic; nonrelativistic and ultrarelativistic effects; channelling and orientation effects; thick and thin crystals; and bremmstrahlung. Study is confined to discussing primary electromagnetic interactions and hence has not considered secondary phenomena such as secondary emission of particles and radiation defects. Designed for theorists and researchers in high- energy and solid state physics and radiation processes, as well as a companion text for senior-level and postgraduate courses. Annotation copyrighted by Book News, Inc., Portland, OR
Author: Sultan B. Dabagov Publisher: World Scientific ISBN: 9814307017 Category : Science Languages : en Pages : 848
Book Description
The book "Channeling 2008", Charged and Neutral Particles Channeling Phenomena, is formed by the same title conference contributions. This volume includes papers by leading researchers from different world centers. Their recent results on the coherent phenomena of charged and neutral particles propagating through the structures of various sizes and periodicities are included here, along with historical reviews by pioneers of coherent Bremsstrahlung and channeling radiation as well as crystal channeling collimation.
Author: Sultan B Dabagov Publisher: World Scientific ISBN: 9814464937 Category : Science Languages : en Pages : 848
Book Description
The book “Channeling 2008”, Charged and Neutral Particles Channeling Phenomena, is formed by the same title conference contributions. This volume includes papers by leading researchers from different world centers. Their recent results on the coherent phenomena of charged and neutral particles propagating through the structures of various sizes and periodicities are included here, along with historical reviews by pioneers of coherent bremsstrahlung and channeling radiation as well as crystal channeling collimation.
Author: H.M. Fried Publisher: Springer Science & Business Media ISBN: 1475704410 Category : Science Languages : en Pages : 438
Book Description
This Advanced Study Institute (ASI) brought together two distinct ·"schools of approach" to Quantum Electrodynamics (QED) in the presence of intense, external, electromagnetic fields, in an effort to lay a joint foundation for a needed theoretical explanation of the sharp e+ e- "resonances" observed in the scattering of very heavy IOns. These (GSI/Darmstadt) experiments, whose history, latest reconfirmations, and most recent data were presented in three opening sessions (Bokemeyer, Koenig), show a smooth background of positron (e+) production, as a function of e+ kinetic energy. Superimposed upon this background are four very sharp peaks, of narrow widths (~ 30 KeV) and of clear experimental significance ('" 5 standard deviations). Most ofthese peaks correspond to sharp, essentially back-to-back electron-positron emission in the ions' center of mass. Following the approach of "supercritical" potential theory (SPT), where the total ionic charge unit Z satisfies Z > 137, it has been possible to provide a detailed and apparently correct understanding of the smooth e+ e- background; a coherent description of different facets of this approach, emphasizing the nature of the charged, supercritical vacuum, was described by the authors responsible for the invention of SPT (Greiner, Muller, Rafelski). In addition, predictions for related phenomena were outlined by other lecturers using the SPT approach (Bawin, Soff, SsJrensen).
Author: Piotr Budzyński Publisher: Taylor & Francis ISBN: 1040037453 Category : Technology & Engineering Languages : en Pages : 175
Book Description
This book describes the interaction between ions and metallic targets as well as energy loss processes during ion implantation and irradiation. Ion bombardments of targets cause changes in surface layer chemical composition, radiation defect formation, sputtering, blistering, swelling and ion mixing. These effects modify surface topography, crystalline structure, electrical and tribological properties of metals and alloys. The book presents research on the effects of the implantation and irradiation on the friction and wear of modified materials, as well as practical applications of ion implantation and irradiation. It offers a review of current problems related to the modification of materials via irradiation. In addition, computer programs for modeling the depth of ions and vacancies in a sample are presented, and potential causes of disagreement between modeling and experimental results are described. Finally, the book provides evidence of the long-range effect. Effect of Ion Irradiation on the Properties of Metals and Alloys is aimed at academics investigating the properties of metals and alloys after irradiation and/or implantation as well as for students of engineering and physical and chemical sciences. The book is also useful for those looking for up-to-date information on these methods and ways of solving related problems, and for designers of equipment used in places exposed to high ion irradiation or to cosmic space.
Author: Alberto Gras-Martí Publisher: Springer Science & Business Media ISBN: 146848026X Category : Science Languages : en Pages : 699
Book Description
Early in 1989, while most of us were gathered in the Mediterranean five-centuries-old city of Alacant, the idea of a school on stopping and particle penetration phenomena came to our minds. Later that year when discussing this plan with some of the participants in the 13th International Conference on Atomic Collisions in Solids in Aarhus, we were pleased to note that the proposal was warmly welcomed indeed by the community. An Advanced Study Institute on this or a related subject had not been organized in the last decade. Because of the progress made particularly in the interaction of high energy beams with matter, and the many applications which the general subject of the stopping of charged particles (ions and electrons) in matter enjoys, a Study Institute appeared a worthy enterprise. Even though several international conference series cover developments in these areas, they miss tutorial introductions to the field. The title chosen was Interaction of Charged Particles with Solids and Surfaces, and the objectives were stated as follows: "to cover theory and experiments, including selected applications and hot topics, of the stopping of charged particles (ions and electrons) in matter. The emphasis will be on outlining the areas where further effort is needed, and on specifying the basic needs in applications. Fundamental concepts will prevail over applications, and the character of the Institute as a school will be stressed. " The school was directed by Fernando Flores (Spain), Herbert M. Urbassek (Germany), Nestor R.
Author: Nebojša Nešković
Author: Nebojša Nešković
Author: Nikolaĭ Pavlovich Kalashnikov
Author: Sultan B. Dabagov
Author: 
Author: Sultan B Dabagov
Author: 
Author: H.M. Fried
Author: Piotr Budzyński
Author: 
Author: Alberto Gras-Martí