Screening Constant by Unit Nuclear Charge Method

Description and Application to the Photoionization of Atomic Systems
1. Auflage 2018
ISBN: 978-1-78630-273-1
Verlag: Wiley

Buch, Englisch, 416 Seiten, Format (B × H): 163 mm x 236 mm, Gewicht: 680 g

The reader will find in this collection a clear exposition of the method of the Screen Constant by Nuclear Charge Unit which can be applied in a simple and immediate way to many fields of Physics in relation to atomic spectroscopy.

Autoren/Hrsg.

Sakho, Ibrahima

Inhaltsverzeichnis

Foreword xi

Preface xv

Introduction xix

Part 1 1

Chapter 1. Different Photoionization Processes, Rydberg Series 3

1.1. Photoionization processes 3

1.2. Rydberg Series 10

Chapter 2. Experimental and Theoretical Methods of Photoionization 21

2.1. Experimental methods 21

2.2. Theoretical methods 22

2.3. Absolute photoionization cross-section 24

2.4. Analysis of resonance energies and quantum defect 28

Chapter 3. General Formalism of the Screening Constant by Unit Nuclear Charge Method Applied to Photoionization 33

3.1. Genesis of the screening constant by unit nuclear charge method 33

3.2. Expression of the total energy of three-electron atomic systems 43

3.3. General expressions of the resonance energies and widths of Rydberg series of multi-electron atomic systems 48

Part 2. Applications in the Calculations of Energies and Natural Widths of the Resonance States of
Multi-Electron Atomic Systems 55

Introduction to Part 2 57

Chapter 4. Application to the Calculation of Energies of Two-electron Atomic Systems (Helium-like Systems) 59

4.1. Energy of the ground state of helium-like systems 59

4.2. Energy of the excited states, 1sns 1,3Se, of helium-like systems 61

4.3. Energy of the doubly excited symmetric states, ns2 and np2, of helium-like systems 65

4.4. Calculation of the resonance energies and natural widths of the Rydberg series, 2 (1,0)n1Se, of the helium atom 67

4.5. Effect of the nucleus on the accuracy of semi-empirical calculations 71

4.6. Resonance energy of the Rydberg series, 2 (1,0)n1,3P°and 2 (1,0)n-P°, of the Li+ helium-like ion 72

4.7. Resonance energies of the Rydberg series,1,3Se, of the Li+ helium-like ion converging toward the excitation threshold, n = 2 78

4.8. Calculation of the energies of the Rydberg states,3 (1,1)n 1P0, of helium-like systems 80

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Über Autor(innen)

Ibrahima Sakho, Assane Seck University of Ziguinchor, Senegal.