Sökning: "NEUTRAL ATOMS"
Visar resultat 1 - 5 av 51 avhandlingar innehållade orden NEUTRAL ATOMS.
1. Instrumentation for energetic Neutral atom measurements at Mars, Venus and The Earth
Sammanfattning : This thesis deals with the development and calibrations of sensors to measure energetic neutral atoms (ENAs) at Mars, Venus, and the Earth. ENAs are formed in charge exchange processes between energetic, singly--charged ions and a cold neutral gas. LÄS MER
2. Spectroscopic studies of the negative state of atoms
Sammanfattning : Negative ions are of fundamental interest in atomic physics due to the enhanced importance of the electron correlation. In this thesis new spectroscopic methods have been developed and then applied to study the nature of atomic negative ions. LÄS MER
3. Studies of energy levels and lifetimes in neutral and ionized light atoms
Sammanfattning : [abstract missing].... LÄS MER
4. Solar Wind Proton Interactions with Lunar Magnetic Anomalies and Regolith
Sammanfattning : The lunar space environment is shaped by the interaction between the Moon and the solar wind. In the present thesis, we investigate two aspects of this interaction, namely the interaction between solar wind protons and lunar crustal magnetic anomalies, and the interaction between solar wind protons and lunar regolith. LÄS MER
5. Time-resolved laser spectroscopic studies of atoms, ions and Molecules
Sammanfattning : Time-resolved laser spectroscopy has been performed to study the radiative properties of various microscopic systems. Using Laser-Induced Fluorescence (LIF) techniques, natural radiative lifetimes have been studied not only in neutral B, S, Ge, Ce, Pb, and in singly ionized V, Fe, Zr, Mo, La, Ce, Eu, Gd and Yb, but also in doubly ionized La, Ce, Pr, Eu, Er, Gd, Tm, Lu, and W. LÄS MER