Tag: Positron

Computational Atomic Physics Electron and Positron Collisions with Atoms and Ions


Free Download Computational Atomic Physics: Electron and Positron Collisions with Atoms and Ions by Klaus Bartschat
English | PDF | 1996 | 264 Pages | ISBN : 3642646557 | 24 MB
Computational Atomic Physics deals with computational methods for calculating electron (and positron) scattering from atoms and ions, including elastic scattering, excitation, and ionization processes. Each chapter is divided into abstract, theory, computer program with sample input and output, summary, suggested problems, and references. An MS-DOS diskette is included, which holds 11 programs covering the features of each chapter and therefore contributing to a deeper understanding of the field. Thus the book provides a unique practical application of advanced quantum mechanics.

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Computational Atomic Physics Electron and Positron Collisions with Atoms and Ions


Free Download Computational Atomic Physics: Electron and Positron Collisions with Atoms and Ions By Klaus Bartschat (auth.), Professor Dr. Klaus Bartschat (eds.)
1996 | 249 Pages | ISBN: 3642646557 | PDF | 9 MB
"Computational Atomic Physics" deals with computational methods for calculating electron (and positron) scattering from atoms and ions, including elastic scattering, excitation, and ionization processes. After an introductory chapter on atomic collision theory, two chapters are devoted to the bound-state wavefunctions. A description of perturbative methods is followed by discussions of the standard non-perturbative close-coupling theory, the R-matrix method, and the recently developed "convergent-close-coupling" approach. The details of calculating accurate Coulomb and Bessel functions are treated as well. Finally, the calculation of scattering amplitudes is discussed and an introduction to the density-matrix theory is given. The book provides a practical application of advanced quantum mechanics. The abstract equations of general scattering theory are reduced to numerically solvable differential and integral equations, and computer codes for the solution are provided. Numerous suggested problems in the text and ten programs on a diskette contribute to a deeper understanding of the field. The diskette The 10 program packages included on a 3 1/2" MS-DOS diskette are written in standard FORTRAN 77 and run on any computer that fulfills the following system requirements: 16MB RAM, MS-DOS 3.30 or higher; 486 DX processor with numerical coprocessor. The FORTRAN 77 source files allow for modification of the programs; therefore a FORTRAN 77 compiler is also needed. Example input and output files are provided for the text cases. * COREPOT core potentials * CIV3 atomic structure * DWBA first order distorted wave program for excitation * DWBIA first order distorted wave program for ionization * CCPA close-coupling for positron-atom scattering * RMATREX R-matrix program for electron-atom scattering * CCC convergent close-coupling * COUL90 Coulomb and Bessel functions

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Positron Annihilation in Chemistry


Free Download Positron Annihilation in Chemistry By Dr. Ole Erik Mogensen (auth.)
1995 | 268 Pages | ISBN: 3642851258 | PDF | 11 MB
Positron Annihilation in Chemistry gives a critical review of the chemistry-oriented positron annihilation research. The only three light particles participating in low energy physics and chemistry are the electron, positron, and positronium. Positronium (Ps) is the most important "anomalous" atom. This volume gives the only available, critical discussion of the chemistry of the two "strange" light particles, the positron and positronium, while the excess electron has been much discussed. Many unusual phenomena in the reaction kinetics of the positron, positronium, and excess electron, and in radiation chemistry and physics, can be investigated in positron annihilation, which also gives important information on defects in solids.

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Positron Emission Tomography


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English | 2024 | ISBN: 1071634984 | 454 Pages | PDF (True) | 17 MB
This detailed volume explores key concepts and experimental design related to Positron Emission Tomography (PET) imaging that have revolutionized our understanding of human biology. The first part focuses on recent advances in radiotracer probe development to enable the detection of materials, from large macromolecules to complicated drug-like structures. The next section describes how key physiological and pathophysiological processes can be interrogated and quantifiably measured with this imaging technique. Finally, chapters examine important technological developments in the field that are revolutionizing the way these innovative PET probes are utilized in the clinic. Written for the highly successful Methods in Molecular Biology series, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step and readily reproducible laboratory protocols, as well as tips on troubleshooting and avoiding known pitfalls.

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Positron Profilometry Probing Material Depths for Enhanced Understanding


Free Download Positron Profilometry: Probing Material Depths for Enhanced Understanding by Jerzy Dryzek
English | PDF EPUB (True) | 2023 | 146 Pages | ISBN : 3031410920 | 25.8 MB
This book provides a comprehensive overview of positron profilometry, specifically focusing on the analysis of defect depth distribution in materials. Positron profilometry plays a crucial role in understanding and characterizing defects in a wide range of materials, including metals, semiconductors, polymers, and ceramics. By analyzing the depth distribution of defects, researchers can gain insights into various material properties, such as crystal structure, defect density, and diffusion behavior. The author’s extensive research spanning a period of two decades has primarily centered on subsurface zones. These regions, located beneath the surface and subjected to various surface processes, play a crucial role in generating defect distributions. Three experimental techniques and their data analysis are described in detail: a variable-energy positron beam (VEP) called sometimes a slow positron beam, a technique called implantation profile depth scanning (DSIP), and a sequential etching (SET) technique. The usability of these techniques is illustrated by many examples of measurements by the author and others.

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