Stark Broadening of Heavy Ion Spectral Lines with Some Astrophysical Applications PDF Download

Author: Zlatko Majlinger
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description
Stark broadening is dominant mechanism of broadening for spectral lines in high-energy plasma. This book focuses on research of stellar plasma, although the results can be used in a study of laboratory plasma as well. Importance of Stark broadening of spectral lines for analysis, interpretation and synthesis of the star spectra, diagnostics, analysis and modeling of stellar plasma is considered as well as the significance of these results for research laboratory, fusion and technological plasma or laser physics. The aim is to determine the previously unknown Stark broadening parameters of the spectral lines of transition metals and lanthanides that do not exist in the literature yet, neither measured by laboratory methods nor theoretically determined, for single electrically charged ions (Co II), double electrically charged ions (Lu III), and triple electrically charged ions (Zr IV), in order to study the impact of line broadening on spectra of hot stars and white dwarfs.

Author: Saul J. Adelman
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 584

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Book Description

Author: Milan S. Dimitrijević
Publisher: MDPI
ISBN: 3039281682
Category : Science
Languages : en
Pages : 268

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Book Description
Spectral lines, widths, and shapes are powerful tools for emitting/absorbing gas diagnostics in different astrophysical objects (from the solar system to the most distant objects in the universe—quasars). On the other hand, experimental and theoretical investigations of laboratory plasma have been applied in spectroscopic astrophysical research, especially in research on atomic data needed for line shape calculations. Data on spectral lines and their profiles are also important for diagnostics, analysis, and the modelling of fusion plasma, laser-produced plasma, laser design and development, and various plasmas in industry and technology, like light sources based on plasmas or the welding and piercing of metals by laser-produced plasma. The papers from this book can be divided into four groups: 1. stark broadening data for astrophysical and laboratory plasma investigations; 2. applications of spectral lines for astrophysical and laboratory plasma research; 3. spectral line phenomena in extragalactic objects, and 4. laboratory astrophysics results for spectra investigation. The reviews and research papers, representing new research on the topics presented in this book, are of interest for specialists and PhD students. We hope that the present book will be useful and interesting for scientists interested in the investigation of spectral line shapes and will contribute to the education of young researchers and PhD students.

Author: S. Böhme
Publisher: Springer Science & Business Media
ISBN: 3662123347
Category : Science
Languages : en
Pages : 787

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Book Description
Astronomy and Astrophysics Abstracts, which has appeared in semi-annual volumes since 1969, is devoted to the recording, summarizing and indexing of astronomical publications throughout the world. It is prepared under the auspices of the International Astronomical Union (according to a resolution adopted at the 14th General Assembly in 1970). Astronomy and Astrophysics Abstracts aims to present a comprehensive documenta tion of literature in all fields of astronomy and astrophysics. Every effort will be made to ensure that the average time interval between the date of receipt of the original literature and publication of the abstracts will not exceed eight months. This time interval is near to that achieved by monthly abstracting journals, compared to which our system of accumu lating abstracts for about six months offers the advantage of greater convenience for the user. Volume 31 contains literature published in 1982 and received before July 15, 1982; some older literature which was received late and which is not recorded in earlier volumes is also included. We acknowledge with thanks contributions to this volume by Dr. J. Bouska, Prague, who surveyed journals and publications in Czech and supplied us with abstracts in English .

Author: Hans Griem
Publisher: Elsevier
ISBN: 0323150942
Category : Science
Languages : en
Pages : 425

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Book Description
Spectral Line Broadening by Plasmas deals with spectral line broadening by plasmas and covers topics ranging from quasi-static approximation and impact approximation to intermediate approximations and correlation effects. Experimental results for hydrogen lines, lines with forbidden components, and ionized helium lines are presented. Applications such as density and temperature measurements are also considered. Comprised of four chapters, this volume begins with an overview of the effects of electric fields from electrons and ions (both acting as point charges) on spectral line shapes. The next chapter surveys theoretical work, paying particular attention to quasi-static, impact, and intermediate approximations as well as correlation effects. Stark broadening experiments are then discussed, with special emphasis on experiments capable of checking the accuracy or validity limits of the various approximations. The final chapter is devoted to applications in laboratory plasma physics and astronomy, focusing on density and temperature measurements and opacity calculations as well as the analysis of stellar atmospheres, amplitudes and spectra of plasma waves, and radio frequency lines. This book should appeal to students, practitioners, and researchers in pure and applied physics.

Author: Evgeniĭ Aleksandrovich Oks
Publisher: Alpha Science International, Limited
ISBN:
Category : Science
Languages : en
Pages : 176

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Book Description
The Stark broadening of spectral lines in plasmas belongs to the highest level of plasma spectroscopy and is consequently its most complicated subject. This book presents analytical advances into this problem, thus yielding a physical insight.

Author: John T. Jefferies
Publisher:
ISBN:
Category : Astronomical spectroscopy
Languages : en
Pages : 328

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Book Description
The purpose of this book is to discuss certain aspects of the theory of the formation and analysis of the line spectrum of a hot gas. The underlying motivation for most of the studies discussed here lies in a desire to develop a physically sound procedure for interpreting the line spectrum of a stellar atmosphere ; correspondingly, the major emphasis is given to problems encountered in astrophysics.

Author: Richard M. West
Publisher: Springer Science & Business Media
ISBN: 9400953925
Category : Science
Languages : en
Pages : 717

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Book Description
volume XIX A of IAU Transactions contains the reports by Presidents of Commissions, covering the period July 1981 - June 1984. The topics of IAU Commissions deal with all of contemporary astronomy and the present volume therefore constitutes an exhaustive and unique record of astronomical research during this interval. It is particularly useful for astronomers and other scientists who want to gain an overview of a certain field, not necessarily near their own research area. Each Commission President was requested, by early 1984, to begin prep arations for the compilation of his/her Commission report. All members of Commissions were asked to supply details about their individual research pro grammes. The ensuing, very substantial task of concatenating was undertaken in late 1984 by the Presidents, often supported by a team of authors, all recog nized authorities in their fields. In order to preserve some measure of uni formity - which is in any case very difficult with so many authors - editorial guidelines were sent to Presidents, including the number of pages allotted to each Commission.

Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 722

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Book Description

Author: Hans A. Bethe
Publisher: Springer Science & Business Media
ISBN: 3662128691
Category : Science
Languages : en
Pages : 375

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Book Description
Nearly all of this book is taken from an article prepared for a volume of the Encyclopedia of Physics. This article, in turn, is partly based on Dr. Norbert Rosenzweig's translation of an older article on the same subject, written by one of us (H.A.B.) about 25 years ago for the Geiger-Scheel Handbuch der Physik. To the article written last year we have added some Addenda and Errata. These Addenda and Errata refer back to some of the 79 sections of the main text and contain some misprint corrections, additional references and some notes. The aim of this book is two-fold. First, to act as a reference work on calcu lations pertaining to hydrogen-like and helium-like atoms and their comparison with experiments. However, these calculations involve a vast array of approximation methods, mathematical tricks and physical pictures, which are also useful in the application of quantum mechanics to other fields. In many sections we have given more general discussions of the methods and physical ideas than is necessary for the study of the H- and He-atom alone. We hope that this book will thus at least partly fulfill its second aim, namely to be of some use to graduate students who wish to learn "applied quantum mechanics". A basic knowledge of the principles of quantum mechanics, such as given in the early chapters of Schiff's or Bohm's book, is presupposed.