Geometry and Barrier Attenuation Generated by a Vertical Slab Exposed to a Plane Co60 PDF Download
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Author: G. E. Plummer
Publisher:
ISBN:
Category : Attenuation (Physics)
Languages : en
Pages : 58
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Book Description
A solution to the problem of how one may determine the dose received by a detector that has a vertical barrier interposed between it and a horizontal infinite radiation field has been attempted. Steel barriers of effective mass thickness 0 to 73 lb/ft]2 were employed. The detector was collimated so that regardless of its distance from the barrier it always saw a constant circular area on the barrier. The infinite radiation field was simulated by a traveling Co]60 source that was pumped through an array of plastic tubing that covered a 100-ft semicircular area. An extrapolation to the infinite field case attempted. The final results are expressed as ratios of dose received by an unprotected detector 3 ft above the plane. The experimental points are compared to a family of theoretical curves.
Author: G. E. Plummer
Publisher:
ISBN:
Category : Attenuation (Physics)
Languages : en
Pages : 58
Get Book Here
Book Description
A solution to the problem of how one may determine the dose received by a detector that has a vertical barrier interposed between it and a horizontal infinite radiation field has been attempted. Steel barriers of effective mass thickness 0 to 73 lb/ft]2 were employed. The detector was collimated so that regardless of its distance from the barrier it always saw a constant circular area on the barrier. The infinite radiation field was simulated by a traveling Co]60 source that was pumped through an array of plastic tubing that covered a 100-ft semicircular area. An extrapolation to the infinite field case attempted. The final results are expressed as ratios of dose received by an unprotected detector 3 ft above the plane. The experimental points are compared to a family of theoretical curves.
Author: Anthony Mark Fox
Publisher: Oxford University Press, USA
ISBN: 9780198506126
Category : Science
Languages : en
Pages : 324
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Book Description
This book gives an introduction to the optical properties of solids, including many new topics that have not been previously covered in other solid state texts at this level. The fundamental principles of absorption, reflection, luminescence and light scattering are discussed for a wide range of materials, including crystalline insulators and semiconductors, glasses, metals, and molecular materials. Classical and quantum models are used where appropriate along with recent experimental data. Examples include semiconductor quantum wells, organic semiconductors, vibronic solid state lasers, and nonlinear optics.
Author: Kevin L. Jensen
Publisher: John Wiley & Sons
ISBN: 1119051754
Category : Science
Languages : en
Pages : 716
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Book Description
A practical, in-depth description of the physics behind electron emission physics and its usage in science and technology Electron emission is both a fundamental phenomenon and an enabling component that lies at the very heart of modern science and technology. Written by a recognized authority in the field, with expertise in both electron emission physics and electron beam physics, An Introduction to Electron Emission provides an in-depth look at the physics behind thermal, field, photo, and secondary electron emission mechanisms, how that physics affects the beams that result through space charge and emittance growth, and explores the physics behind their utilization in an array of applications. The book addresses mathematical and numerical methods underlying electron emission, describing where the equations originated, how they are related, and how they may be correctly used to model actual sources for devices using electron beams. Writing for the beam physics and solid state communities, the author explores applications of electron emission methodology to solid state, statistical, and quantum mechanical ideas and concepts related to simulations of electron beams to condensed matter, solid state and fabrication communities. Provides an extensive description of the physics behind four electron emission mechanisms—field, photo, and secondary, and how that physics relates to factors such as space charge and emittance that affect electron beams. Introduces readers to mathematical and numerical methods, their origins, and how they may be correctly used to model actual sources for devices using electron beams Demonstrates applications of electron methodology as well as quantum mechanical concepts related to simulations of electron beams to solid state design and manufacture Designed to function as both a graduate-level text and a reference for research professionals Introduction to the Physics of Electron Emission is a valuable learning tool for postgraduates studying quantum mechanics, statistical mechanics, solid state physics, electron transport, and beam physics. It is also an indispensable resource for academic researchers and professionals who use electron sources, model electron emission, develop cathode technologies, or utilize electron beams.
Author: Mark Fox
Publisher: Oxford University Press
ISBN: 0199573360
Category : Science
Languages : en
Pages : 415
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Book Description
For final year undergraduates and graduate students in physics, this book offers an up-to-date treatment of the optical properties of solid state materials.
Author:
Publisher: Cambridge University Press
ISBN: 0521592100
Category :
Languages : en
Pages : 455
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Book Description
Author: Moses Fayngold
Publisher: John Wiley & Sons
ISBN: 3527674748
Category : Science
Languages : en
Pages : 757
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Book Description
Alongside a thorough definition of basic concepts and their interrelations, backed by numerous examples, this textbook features a rare discussion of quantum mechanics and information theory combined in one text. It deals with important topics hardly found in regular textbooks, including the Robertson-Schrodinger relation, incompatibility between angle and angular momentum, "dispersed indeterminacy", interaction-free measurements, "submissive quantum mechanics", and many others. With its in-depth discussion of key concepts complete with problems and exercises, this book is poised to become the standard textbook for advanced undergraduate and beginning graduate quantum mechanics courses and an essential reference for physics students and physics professionals.
Author: Donald Gary Swanson
Publisher: Taylor & Francis
ISBN: 1584887532
Category : Science
Languages : en
Pages : 350
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Book Description
Progressing from the fundamentals of quantum mechanics (QM) to more complicated topics, Quantum Mechanics: Foundations and Applications provides advanced undergraduate and graduate students with a comprehensive examination of many applications that pertain to modern physics and engineering. Based on courses taught by the author, this textboo
Author: Igor A. Balagansky
Publisher: John Wiley & Sons
ISBN: 1119779537
Category : Science
Languages : en
Pages : 356
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Book Description
Comprehensive coverage of weapon damage effects on a variety of objects Damaging Effects of Weapons and Ammunition delivers a thorough exploration of a range of issues related to the effects of ammunition and weapons. The book includes coverage of the basic concepts of the theory of efficiency and the physical foundations of the functional and damaging effects of fragments, shaped charges, high-explosive and penetrating weapons. The author discusses the calculation formulas used to evaluation the parameters of damage fields and their interaction with various objects. Additionally, the book expands on the damage criteria of weapons, the characteristics of the vulnerability of objects with respect to a variety of damaging factors, dependencies for assessing safe distances, and the resistance of various structures to the effects of explosion and impact. Damaging Effects of Weapons and Ammunition also offers: Detailed calculation methods indicating areas of application and the necessary units of used quantities Extensive examples of classic designs of ammunition from around the world Discussions of the characterization of various types of ammunition, including high-explosive, fragment, penetrative, and shaped charges A chapter on the numerical simulation of high-speed processes Perfect for technical specialists working in the fields of explosion safety and explosives, Damaging Effects of Weapons and Ammunition also belongs in the libraries of researchers and students studying explosion phenomena, explosive technologies, explosion safety, and materials science.
Author: Dieter Bimberg
Publisher: John Wiley & Sons
ISBN: 9780471973881
Category : Science
Languages : en
Pages : 350
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Book Description
Da die Nachfrage nach immer schnelleren und kleineren Halbleiterbauelementen stetig wächst, sind Quanten-Dots und -Pyramiden rasant in den Mittelpunkt der Halbleiterforschung gerückt. Dieses Buch vermittelt einen umfassenden Überblick über den aktuellen Forschungsstand auf diesem Gebiet. Behandelt werden u.a. Fragen, wie Strukturen aufgebaut, wie sie charakterisiert werden und wie sie die Leistungsfähigkeit der Bauelemente bestimmen. (11/98)
Author: Stevo Todorcevic
Publisher: Princeton University Press
ISBN: 1400835402
Category : Mathematics
Languages : en
Pages : 296
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Book Description
Ramsey theory is a fast-growing area of combinatorics with deep connections to other fields of mathematics such as topological dynamics, ergodic theory, mathematical logic, and algebra. The area of Ramsey theory dealing with Ramsey-type phenomena in higher dimensions is particularly useful. Introduction to Ramsey Spaces presents in a systematic way a method for building higher-dimensional Ramsey spaces from basic one-dimensional principles. It is the first book-length treatment of this area of Ramsey theory, and emphasizes applications for related and surrounding fields of mathematics, such as set theory, combinatorics, real and functional analysis, and topology. In order to facilitate accessibility, the book gives the method in its axiomatic form with examples that cover many important parts of Ramsey theory both finite and infinite. An exciting new direction for combinatorics, this book will interest graduate students and researchers working in mathematical subdisciplines requiring the mastery and practice of high-dimensional Ramsey theory.
