Browsing by Author "Landers, Allen"

Now showing items 1-12 of 12

Angular Correlation of Electrons Emitted by Double Auger Decay of K-Shell Ionized Neon

Jones, Matthew (2011-08-02)

We have investigated in detail the $4$-body continuum state produced when core-ionized neon undergoes Double-Auger (\textsc{da}) decay, using COLd Target Recoil Ion Momentum Spectroscopy (\textsc{coltrims}). We conducted ...

Density Limit Disruptions in the Compact Toroidal Hybrid Experiment

Kring, James (2021-08-03)

Density limit disruptions in toroidal plasma experiments have been an active area of research for decades. Density limit disruptions are plasma terminations that occur as the plasma density is increased. Plasma disruptions ...

Double Photoionization of Water and Dissociative Electron Attachment to CF4

Reedy, Dylan (2016-11-29)

This thesis is an amalgam of two largely diﬀerent experiments. While the exper- imental apparatus are similar, the incident particles, fundamental interactions, and dissociation dynamics of the two systems are entirely ...

Electron Correlation in the Two-Color Photoionization and Laser Dissociation of H2+

Gatton, Averell (2018-06-05)

We have constructed, to our knowledge, a first of its kind two-color pulsed synchrotron (XUV) and strong field laser (IR) COld Target Recoil Ion Momentum Spectroscopy (COLTRIMS) experiment. We describe the design, ...

Exploring intermolecular interactions through Coupled Cluster, Density Functional, and Multireference Symmetry-Adapted Perturbation Theories

Smith, Daniel (2015-12-08)

Intermolecular interactions are computed at successively lower levels of theory to establish the relative accuracy of each level. A set of 21 small molecules was first computed using the CCSDT(Q) level of theory to establish ...

Imaging Multi-Particle Atomic and Molecular Dynamics in Dissociative Electron Attachment to CF4 and Double Photoionization of NH3 Molecules

Strom, Richard (2021-05-18)

The experimental process and scientific study of two molecular interactions is presented. The first experiment consist of the phenomenon of dissociative electron attachment, (DEA), to Carbon Tetrafluoride, CF4, with the ...

Imaging Polyatomic Molecules in Three Dimensions Using Molecular Frame Photoelectron Angular Distributions

Williams, Joshua (2012-05-10)

We demonstrate a method for determining the full three-dimensional molecular frame photoelectron angular distribution in polyatomic molecules using methane as a prototype. Simultaneous double Auger decay and subsequent ...

Interactions between Electromagnetic Ion Cyclotron Waves and Protons in the Magnetosphere: SCATHA Results

Nguyen, Son (2007-05-15)

Electromagnetic ion cyclotron (EMIC) waves and their role in governing proton populations in the ring current and radiation belt regions are of importance in understanding the dynamics of the Earth’s magnetosphere. The ...

Many-Body Dipole Interactions

Hernandez, Jesus (2008-08-15)

This dissertation presents the study of controllable but strong long-range interaction between dipoles. In particular, we investigate the excitation and interaction between atoms in a cold gas where the collisional time ...

Measurement of the thermal properties of a weakly-coupled complex (dusty) plasma

Williams, Jeremiah (2006-12-15)

Knowledge of the velocity space distribution function facilitates the characterization of the thermal and dynamical properties of a system. In this work, a comprehensive series of experiments and numerical simulations are ...

Photodissociation dynamics of vibrationally excited hydrogen molecules examined with reaction microscopy in kinematically complete VUV + NIR experiments

Burrows, Spenser (2023-12-04)

Using the Cold Target Recoil Ion Momentum Spectroscopy (COLTRIMS) technique, we investigated the dissociation of vibrationally excited H₂ and D₂ molecules after two-color vacuum ultraviolet (VUV) + near-infrared (NIR) ...

Time-Dependent Studies of Fundamental Atomic Processes in Rydberg Atoms

Topcu, Turker (2007-08-15)

This dissertation consists of four time-dependent studies of various fundamental atomic processes involving highly excited atoms and ions. We use time-dependent close-coupling theory besides other perturbative and and ...