Sökning: "ions atoms collisions"
Visar resultat 1 - 5 av 8 avhandlingar innehållade orden ions atoms collisions.
1. Electron transfer in slow collisions of highly charged ions with atoms and molecules
Sammanfattning : Several spectroscopic methods have been used to study single- and double electron transfer in slow collisions between highly charged ions with neutral atoms and the C60 molecule.Radiative and non-radiative decay from high-lying doubly-excited states, populated in slow (v = 0.40 a.u. LÄS MER
2. Molecular Hole Punching : Impulse Driven Reactions in Molecules and Molecular Clusters
Sammanfattning : When molecules are excited by photons or energetic particles, they will cool through the emission of photons, electrons, or by fragmenting. Such processes are often thermal as they occur after the excitation energy has been redistributed across all degrees-of-freedom in the system. LÄS MER
3. Ions colliding with molecules and molecular clusters : fragmentation and growth processes
Sammanfattning : In this work we will discuss fragmentation and molecular growth processes in collisions of Polycyclic Aromatic Hydrocarbon (PAH) molecules, fullerenes, or their clusters with atoms or atomic ions. Simple collision models as well as molecular structure calculations are used to aid the interpretations of the present and other experimental results. LÄS MER
4. Mutual neutralisation reactions in atmospheric and industrial plasmas
Sammanfattning : This thesis deals with experimental studies of electron transfer reactions between oppositely charged ions (mutual neutralisation). These were performed at the unique double electrostatic ion storage ring DESIREE at Stockholm University, which was put into full operation in 2017. LÄS MER
5. Studies of ionised atoms with collision-based spectroscopy and laser spectroscopy
Sammanfattning : Atomic structure and collision properties of ionised atoms have been studied usingcollision-based spectroscopy and fast ion beam-laser spectroscopy.Collision induced photon emission spectra of Xe VI, Xe VII and Xe VIII andthe potassium like metal ions Mn VII, Fe VIII and Co IX have been recorded with a beam of multiply charged ions from an ECR (electron cyclotron resonance) ion source passing through an atomic target. LÄS MER
