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Positrons in Solids

Positrons in Solids
Author: P. Hautojärvi
Publisher: Springer Science & Business Media
Total Pages: 266
Release: 2012-12-06
Genre: Science
ISBN: 364281316X

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In condensed matter initially fast positrons annihilate after having reached equi librium with the surroundings. The interaction of positrons with matter is governed by the laws of ordinary quantum mechanics. Field theory and antiparticle properties enter only in the annihilation process leading to the emergence of energetic photons. The monitoring of annihilation radiation by nuclear spectroscopic methods provides valuable information on the electron-positron system which can directly be related to the electronic structure of the medium. Since the positron is a positive electron its behavior in matter is especially interesting to solid-state and atomic physi cists. The small mass quarantees that the positron is really a quantum mechanical particle and completely different from any other particles and atoms. Positron physics started about 25 years ago but discoveries of new features in its interac tion with matter have maintained continuous interest and increasing activity in the field. Nowadays it is becoming part of the "stock-in-trade" of experimental physics.


Positron Spectroscopy of Solids

Positron Spectroscopy of Solids
Author: Alfredo Dupasquier
Publisher: IOS Press
Total Pages: 830
Release: 1995
Genre: Electronic structure
ISBN: 9789051992038

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The lifetime of a positron inside a solid is normally less than a fraction of nanosecond. This is a very short time on a human scale, but is long enough to enable the positron to visit an extended region of the material, and to sense the atomic and electronic structure of the environment. Thus, we can inject a positron in a sample to draw from it some signal giving us information on the microscopic properties of the material. This idea has been successfully developed in a number of positron-based techniques of physical analysis, with resolution in energy, momentum, or position. The complex of these techniques is what we call now positron spectroscopy of solids. The field of application of the positron spectroscopy extends from advanced problems of solid-state physics to industrial applications in the area of characterization of high-tech materials. This volume focuses the attention on the physics that can be learned from positron-based methods, but also frames those methods in a wider context including other experimental approaches. It can be considered as a textbook on positron spectroscopy of solids, the sort of book that the newcomer takes for his approach to this field, but also as a useful research tool for the expert.


Positrons in Solids

Positrons in Solids
Author: P. Hautojarvi
Publisher:
Total Pages: 276
Release: 1979-03-01
Genre:
ISBN: 9783642813177

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Near-Surface Depth Profiling of Solids by Mono-Energetic Positrons

Near-Surface Depth Profiling of Solids by Mono-Energetic Positrons
Author: Bichitra Nandi Ganguly
Publisher: Trans Tech Publications Ltd
Total Pages: 300
Release: 2012-09-19
Genre: Technology & Engineering
ISBN: 3038134503

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Volume is indexed by Thomson Reuters BCI (WoS). This work reflects the wide and fascinating range of fields to which positrons have made important contributions. This covers, in particular, the development of low-energy (eV-keV) beams of essentially mono-energetic positrons, in the late 1960s, which opened the door to an even wider range of fundamental and technological studies: from surface physics to polymer films. In her introduction Professor Ganguly offers some background knowledge on the extent to which positrons have influenced and contributed to work in numerous fields.


Positron Annihilation in Semiconductors

Positron Annihilation in Semiconductors
Author: Reinhard Krause-Rehberg
Publisher: Springer Science & Business Media
Total Pages: 408
Release: 1999
Genre: Science
ISBN: 9783540643715

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This comprehensive book reports on recent investigations of lattice imperfections in semiconductors by means of positron annihilation. It reviews positron techniques, and describes the application of these techniques to various kinds of defects, such as vacancies, impurity vacancy complexes and dislocations.


Positron Dynamics in Solids

Positron Dynamics in Solids
Author: Jari Mäkinen
Publisher:
Total Pages: 52
Release: 1991
Genre: Positron annihilation
ISBN: 9789516663343

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Principles and Applications of Positron & Positronium Chemistry

Principles and Applications of Positron & Positronium Chemistry
Author: Y. C. Jean
Publisher: World Scientific
Total Pages: 426
Release: 2003
Genre: Science
ISBN: 9812775617

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This book provides a comprehensive description of the principles and applications of positron and positronium chemistry. Pedagogical and tutorial in nature, it will be ideal for graduate students and researchers in the area of positron annihilation spectroscopy. The contributing authors are authoritative scientists prominent in the frontiers of research, actively pursuing positron annihilation research on chemical and applied systems. Contents: Introduction to Positron and Positronium Chemistry (Y C Jean et al.); Compounds of Positrons and Positronium (D M Schrader); Experimental Techniques in Positron Spectroscopy (P G Coleman); Organic and Inorganic Chemistry of the Positron and Positronium (G Duplotre & I Billard); Physical and Radiation Chemistry of the Positron and Positronium (S V Stepanov & V M Byakov); Positrons and Positronium in the Gas Phase (D M Schrader); Positron Porosimetry (M H Weber & K G Lynn); Positron Annihilation Studies on Superconducting Materials (C S Sundar); Positronium in Si and SiO 2 Thin Films (R Suzuki); Applications to Polymers (P E Mallon); Applications of Slow Positrons to Polymeric Surfaces and Coatings (Y C Jean et al.); Positron Annihilation Induced Auger Spectroscopy (S Amdani et al.); Characterization of Nanoparticle and Nanopore Materials (J Xu); AMOC in Positron and Positronium Chemistry (H Stoll et al.). Readership: Materials science researchers; physical chemists; polymer scientists and engineers; chemical and mechanical engineers; solid state physicists; graduate students in chemistry, physics, engineering and polymer science; coating industry researchers."


Atomic Physics with Positrons

Atomic Physics with Positrons
Author: J.W. Humberston
Publisher: Springer Science & Business Media
Total Pages: 448
Release: 2012-12-06
Genre: Science
ISBN: 1461309638

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The NATO Advanced Research Workshop on Atomic Physics with Positrons, which was held at University College London during 15-18 July 1987, was the fourth meeting in a series devoted to the general theme of positron colli sions in gases. Previous meetings have been held at York University, Toronto (1981); Royal Holloway College, Egham (1983) and Wayne State Uni versity, Detroit (1985). Recent very significant improvements in positron beam currents, due to the development of more efficient moderators and the use of more intense positron sources, are making possible an increasingly sophisticated range of experiments in atomic collision physics. Whereas a few years ago only total scattering cross sections could be determined, measurements can now be made of various partial and differential cross sections. Intense positron beams are also being used to produce positronium beams and already, as reported here, preliminary investigations have been made of collisions of positronium with several target systems. These experimental developments have stimulated, and been stimulated by, steady, if somewhat less spectacu1ar,progress in associated theoretical studies. Both aspects of the field are well represented in these Proceed ings.


Positron Annihilation in Chemistry

Positron Annihilation in Chemistry
Author: Ole E. Mogensen
Publisher: Springer Science & Business Media
Total Pages: 279
Release: 2012-12-06
Genre: Science
ISBN: 3642851231

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The only critical discussion available on the chemistry of the two "strange" light particles, the positron and positronium, with much space devoted to the excess electron. Positron annihilation allows the investigation of many unusual phenomena in the reaction kinetics of the positron, positronium, and excess electron, and in radiation chemistry and physics, while also providing important information on defects in solids.