Dissertation > Excellent graduate degree dissertation topics show

Theoretical Analysis of Beam-foil Spectra of Highly Ionized Sulfur Ions

Author: HuangLiangYu
Tutor: DongChenZhong
School: Northwest Normal University
Course: Atomic and Molecular Physics
Keywords: beam-foil spectra technology highly charged ions HFR method level weighted oscillator strength
CLC: O562
Type: Master's thesis
Year: 2009
Downloads: 45
Quote: 0
Read: Download Dissertation

Abstract


The research of highly charged ions plays a key role in the study and test on the atomic structure,nuclear structure and basic particles; as well as the research and diagnosis on kinds of plasmas in astrophysics and fusion. And its radiation spectra not only contain important information about plasma parameters such as charge state distribution, polarization of X?ray radiation and so on, but also provide an important diagnostic tool for investigations of laboratory and astrophysical plasmas. beam?foil technology is an important method of producing the highly charged ions in the laboratory, and is characterized by higher excitated degree and shorter excitated time. Therefore, it is widely used to research on different charged ions for every element.Many researches show that the spectra from different charged S ions are in the spectra of planets, it is very important for the study of the spectra from celestial body to identify the spectra of Sulfur ion. Consequently, on the basis of analyzing the beam-foil spectra of sulfur, we use the quasi?relativistic Hartree?Fock (HFR) method in the present work, and give the systemic theoretical investigation on the levels, electric dipole radiation (E1) wavelength and its transition oscillator strength for S8+-S13+ions. Besides, the correlative atomic data for S10+ are calculated in detail.In this thesis, firstly, an introduction has been given, which involve the background and the research methods for highly charged ions in experiment and theory; Chapter 2 describes the quasi?relativistic Hartree?Fock (HFR) method, the calculation of transition probability and oscillator strength and the relative knowledge of Gaussian broadening; the experimental principle of beam?foil technology and its experimental apparatus, as well as the identity of the beam?foil spectra technology are presented in Chapter 3; Chapter 4 includes the work done during the master period, on the basis of seeing about the recent study on the sulfur element in the experiment and theory, applying the Cowan’s code based on the quasi?relativistic Hartree?Fock method, we calculate the levels, electric dipole radiation (E1) wavelength from 150? to 500? and their transition oscillator strength and so on, and consequently identify the experimental spectra. Besides, the large number of atomic data such as levels etc for principle quantum number n=2 and 3 for S10+ ions using two configuration models are calculated , and the effect caused different configuration on the atomic data are analyzed; In the end of the thesis, some summarization and a vista of the future work have been given.

Related Dissertations

  1. Research of Irreversible Loss in Flow and Mexed Prosess,TK12
  2. The Study on the Location and Level of Grain Market in Peking during Republican China Period,K291
  3. Video Coding Research Based on Texture Characteristics,TP391.41
  4. The Discovery of User Concept Region Based on Multiple Instance Learning,TP391.41
  5. Research on Learning-Based Low-Level Vision Problem,TP391.41
  6. Analysis of County Government Public Crisis Management Problem in Our Country,D630
  7. A Research of the Integrating System of Teachers’ Development,G451.1
  8. Researching the Reform Method of Basic-level Party Organizations’ Electoral System under the Sociological Perspective,D267
  9. Research on Object-Oriented Integration Testing Method,TP311.53
  10. Research on the Correlation between Education Level and Income Gap,G520
  11. Research on the Evaluation Index System of Undergraduate Teaching Team Building Level,G647
  12. Prospecting and evaluation of the initial stage of the value of the elements of the analytic hierarchy process and fuzzy comprehensive evaluation model,F426.1
  13. The Study on R-M Instability of the Material Interface in Gas-water Compressible Flow,O359.1
  14. The Study on the Effect of the Transport Stress and Anti-stress Treatment on the Physiological Function of Beef Cattle,S858.23
  15. K City W ordinary civil service incentives,D630.3
  16. Study on the Third Oil Production Plant of Changqing Oilfield Company Medium-level Performance Management System,F272.92
  17. Information Extraction of Marine Oil Spill with Collaborative Images of ASAR and MODIS,X87
  18. The Impact of Tourism on Typical Vegetation in Luya Mountain Nature Reserve, Shanxi Province,S759.9
  19. Emotional Intelligence within the team , staff efficacy and job performance multi- level research,B849
  20. Tianjin Development of Higher Education Research,G649.2
  21. 3.0T BOLD MR techniques on acute unilateral ureteral obstruction of renal damage,R693.2

CLC: > Mathematical sciences and chemical > Physics > Molecular physics, atomic physics > Atomic Physics
© 2012 www.DissertationTopic.Net  Mobile