UV Laser Ionization and Electron Beam Diagnostics for Plasma Lenses PDF Download
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Languages : en
Pages : 3
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Book Description
A comprehensive study of focusing of relativistic electron beams with overdense and underdense plasma lenses requires careful control of plasma density and scale lengths. Plasma lens experiments are planned at the Beam Test Facility of the LBL Center for Beam Physics, using the 50 MeV electron beam delivered by the linac injector from the Advanced Light Source. Here we present results from an interferometric study of plasmas produced in tri-propylamine vapor with a frequency quadrupled Nd:YAG laser at 266 nm. To study temporal dynamics of plasma lenses we have developed an electron beam diagnostic using optical transition radiation to time resolve beam size and divergence. Electron beam ionization of the plasma has also been investigated.
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Category :
Languages : en
Pages : 3
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Book Description
A comprehensive study of focusing of relativistic electron beams with overdense and underdense plasma lenses requires careful control of plasma density and scale lengths. Plasma lens experiments are planned at the Beam Test Facility of the LBL Center for Beam Physics, using the 50 MeV electron beam delivered by the linac injector from the Advanced Light Source. Here we present results from an interferometric study of plasmas produced in tri-propylamine vapor with a frequency quadrupled Nd:YAG laser at 266 nm. To study temporal dynamics of plasma lenses we have developed an electron beam diagnostic using optical transition radiation to time resolve beam size and divergence. Electron beam ionization of the plasma has also been investigated.
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ISBN:
Category : Nuclear physics
Languages : en
Pages : 772
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Author: K Muraoka
Publisher: CRC Press
ISBN: 1420034065
Category : Science
Languages : en
Pages : 307
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Book Description
Updated and expanded from the original Japanese edition, Laser-Aided Diagnostics of Gases and Plasmas takes a unique approach in treating laser-aided diagnostics. The book unifies the subject by joining applications instead of describing each application as a totally separate system. In taking this approach, it highlights the relative strengths of
Author:
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ISBN:
Category : Nuclear engineering
Languages : en
Pages : 776
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Book Description
Author: Magesh Thiyagarajan
Publisher:
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Category :
Languages : en
Pages : 130
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Author:
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Category : Nuclear energy
Languages : en
Pages : 516
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Author:
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Category : Power resources
Languages : en
Pages : 1472
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Author:
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Category :
Languages : en
Pages :
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Collective Thomson scattering from ion-acoustic waves at 266nm is used to obtain spatially resolved, two-dimensional electron density, sound speed, and radial drift profiles of a collisional laser plasma. An ultraviolet diagnostic wavelength minimizes the complicating effects of inverse bremsstrahlung and refractive turning in the coronal region of interest, where the electron densities approach n[sub c]/10. Laser plasmas of this type are important because they model some of the aspects of the plasmas found in high-gain laser-fusion pellets irradiated by long pulse widths where the laser light is absorbed mostly in the corona. The experimental results and LASNEX simulations agree within a percent standard deviation of 40% for the electron density and 50% for the sound speed and radial drift velocity. Thus it is shown that the hydrodynamics equations with classical coefficients and the numerical approximations in LASNEX are valid models of laser-heated, highly collisional plasmas. The versatility of Thomson scattering is expanded upon by extending existing theory with a Fokker-Planck based model to include plasmas that are characterized by (0 [le] k[sub ia][lambda][sub ii] [le] [infinity]) and ZT[sub e]/T[sub i], where k[sub ia] is the ion- acoustic wave number, [lambda][sub ii] is the ion-ion mean free path, Z is the ionization state of the plasma, and T[sub e], T[sub i] are the electron and ion temperatures in electron volts respectively. The model is valid for plasmas in which the electrons are approximately collisionless, (k[sub ia][lambda][sub ei], k[sub ia][lambda][sub ee] [ge] 1), and quasineutrality holds, ([alpha] [much-gt]1), where [alpha] = 1/k[lambda][sub DE] and [lambda][sub DE] is the electron Debye length. This newly developed model predicts the lineshape of the ion-acoustic Thomson spectra and when fit to experimental data provides a direct measurement of the relative thermal flow velocity between the electrons and ions.
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Category : Science
Languages : en
Pages : 682
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Book Description
Author: Donna Larson
Publisher: Elsevier Health Sciences
ISBN: 0323292534
Category : Medical
Languages : en
Pages : 739
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Book Description
Gain a clear understanding of pathophysiology and lab testing! Clinical Chemistry: Fundamentals and Laboratory Techniques prepares you for success as a medical lab technician by simplifying complex chemistry concepts and lab essentials including immunoassays, molecular diagnostics, and quality control. A pathophysiologic approach covers diseases that are commonly diagnosed through chemical tests — broken down by body system and category — such as respiratory, gastrointestinal, and cardiovascular conditions. Written by clinical chemistry educator Donna Larson and a team of expert contributors, this full-color book is ideal for readers who may have minimal knowledge of chemistry and are learning laboratory science for the first time. - Full-color illustrations and design simplify complex concepts and make learning easier by highlighting important material. - Case studies help you apply information to real-life scenarios. - Pathophysiology and Analytes section includes information related to diseases or conditions, such as a biochemistry review, disease mechanisms, clinical correlation, and laboratory analytes and assays. - Evolve companion website includes case studies and animations that reinforce what you've learned from the book. - Laboratory Principles section covers safety, quality assurance, and other fundamentals of laboratory techniques. - Review questions at the end of each chapter are tied to the learning objectives, helping you review and retain the material. - Critical thinking questions and discussion questions help you think about and apply key points and concepts. - Other Aspects of Clinical Chemistry section covers therapeutic drug monitoring, toxicology, transplantation, and emergency preparedness. - Learning objectives in each chapter help you to remember key points or to analyze and synthesize concepts in clinical chemistry. - A list of key words Is provided at the beginning of each chapter, and these are also bolded in the text. - Chapter summaries consist of bulleted lists and tables highlighting the most important points of each chapter. - A glossary at the back of the book provides a quick reference to definitions of all clinical chemistry terms.
