Kevin L. Jensen – författare

Electron-emissive materials are poised to improve device performance when physical size, weight, power consumption, beam current, and/or high pulse repetition frequencies are an important issue for competitive performance. Cold cathodes offer potential property improvements over conventional thermionic sources - instant on/off performance, high brightness, high-current density, large transconductance-to-capacitance ratio, or low-voltage operation characteristics. Many extraordinary technologies are developing, some well known, and some new to the electron sources scene. Flat-panel displays are undoubtedly the largest commercial endeavor to which cold cathode source technology is being directed. Advanced microwave power tubes are one of the most technically challenging applications pursued. Other important applications with considerable impact include electron sources for micropropulsion systems and tethers for satellites. Small and stable sources are needed for multibeam lithography, electron microscopes, and other high-tech tools and applications. This book contains papers from two symposia held during the 2000 MRS Spring Meeting in San Francisco, all brought together to provide a single comprehensive profile of this dynamic and still advancing field.

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.

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.

A practical, in-depth description of the physics behind electron emission physics and its usage in science and technologyElectron 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 beamsDemonstrates applications of electron methodology as well as quantum mechanical concepts related to simulations of electron beams to solid state design and manufactureDesigned to function as both a graduate-level text and a reference for research professionalsIntroduction 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.

An authoritative and accurate guide to the physics of research- and technology-relevant phenomena of electron emission In Fundamentals of Electron Emission Physics, distinguished research physicist, Dr. Kevin Jensen, delivers a practice-oriented introduction to the physics of electron emission. The book uses a physical intuition approach based on many years of research instead of heavy-handed mathematical formalism. The author explores and explains the fundamentals of electron emission and the basis for successful performance and interpretation of experiments conducted at lab- and large-scale electron sources. He addresses the most common stumbling blocks that students and researchers who are new to the field often run into when confronted with the intricacies of the physics of electron emission. Thorough introductions to semiconductors, canonical emission models, and modern physics methodsComprehensive explorations of tunneling and transmission, the thermal-field-photoemission model, three-step models of photo- and secondary emission, and space chargePractical discussions of mathematical methods and specialized functions (e.g., Gamma function, Riemann Zeta function, orthogonal polynomials)A mathematical appendix, as well as sample problems and solutions to help explain the topics discussed in the bookPerfect for advanced undergraduate and doctoral students in solid state physics, materials science, electron transport, and beam physics, Fundamentals of Electron Emission Physics will also benefit users and developers of electron sources and practicing academics and researchers.

An authoritative and accurate guide to the physics of research- and technology-relevant phenomena of electron emission In Fundamentals of Electron Emission Physics, distinguished research physicist, Dr. Kevin Jensen, delivers a practice-oriented introduction to the physics of electron emission. The book uses a physical intuition approach based on many years of research instead of heavy-handed mathematical formalism. The author explores and explains the fundamentals of electron emission and the basis for successful performance and interpretation of experiments conducted at lab- and large-scale electron sources. He addresses the most common stumbling blocks that students and researchers who are new to the field often run into when confronted with the intricacies of the physics of electron emission. Thorough introductions to semiconductors, canonical emission models, and modern physics methodsComprehensive explorations of tunneling and transmission, the thermal-field-photoemission model, three-step models of photo- and secondary emission, and space chargePractical discussions of mathematical methods and specialized functions (e.g., Gamma function, Riemann Zeta function, orthogonal polynomials)A mathematical appendix, as well as sample problems and solutions to help explain the topics discussed in the book Perfect for advanced undergraduate and doctoral students in solid state physics, materials science, electron transport, and beam physics, Fundamentals of Electron Emission Physics will also benefit users and developers of electron sources and practicing academics and researchers.