Author: Chikang LiPublisher:
ISBN:
Category :
Languages : en
Pages : 223
Book Description
Conceptual Study of Moderately Coupled Plasmas and Experimental Comparison of Laboratory X-ray Sources
Author: Chikang LiConceptual Study of Moderately Coupled Plasmas and Experimental Comparison of Laboratory X-ray Sources
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
In this thesis the fundamental concepts of moderately coupled plasmas, for which 2[approx-lt]ln[Lambda][sub b][approx-lt]10, are, for the first time, presented. This investigation is motivated because neither the conventional Fokker-Planck approximation [for weakly coupled plasmas (ln[Lambda][sub b][approx-lt]10)] nor the theory of dielectric response with correlations for strongly coupled plasmas (ln[Lambda][sub b][approx-lt]1) has satisfactorily addressed this regime. Specifically, herein the standard Fokker-Planck operator for Coulomb collisions has been modified to include hitherto neglected terms that are directly associated with large-angle scattering. In addition a reduced electron-ion collision operator has been calculated that, for the first time, manifests 1/ln[Lambda][sub b] corrections. Precise calculations of some relaxation rates and crude calculations of electron transport coefficients have been made. As one of major applications of the modified Fokker-Planck equation, the stopping powers and [rho]R have been calculated for charged fusion products ([alpha]'s, [sup 3]H, [sup 3]He) and hot electrons interacting with plasmas relevant to inertial confinement fusion. In the second major topic of this thesis, advances made in the area of laboratory x-ray sources are presented. First, and most importantly, through the use a Cockcroft-Walton linear accelerator, a charged particle induced x-ray emission (PIXE) source has been developed. Intense line x radiation (including K-, L-, M-, and N-lines) with wavelengths from 0.5 [angstrom] to 111 [angstrom] have been successfully produced. Second, a new high intensity electron-beam x-ray generator has also been developed, and it has been used with advantage in the soft x-ray region (
Scientific and Technical Aerospace Reports
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 602
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Energy Research Abstracts
Author: Government Reports Announcements & Index
Author: Government Reports Annual Index
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1374
Book Description
Frontiers in High Energy Density Physics
Author: National Research CouncilPublisher: National Academies Press
ISBN: 030908637X
Category : Science
Languages : en
Pages : 177
Book Description
Recent scientific and technical advances have made it possible to create matter in the laboratory under conditions relevant to astrophysical systems such as supernovae and black holes. These advances will also benefit inertial confinement fusion research and the nation's nuclear weapon's program. The report describes the major research facilities on which such high energy density conditions can be achieved and lists a number of key scientific questions about high energy density physics that can be addressed by this research. Several recommendations are presented that would facilitate the development of a comprehensive strategy for realizing these research opportunities.
Dissertation Abstracts International
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 960
Book Description
American Doctoral Dissertations
Author: Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 704
Book Description
Author: