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Estimating Proximity To The Asymmetric Reconnection X-Line, Matthew Argall
Estimating Proximity To The Asymmetric Reconnection X-Line, Matthew Argall
Doctoral Dissertations
Magnetic reconnection is a process that changes magnetic topology, allows plasma transport across boundaries, and converts field potential energy to particle kinetic energy. All of these processes are tied to the X-line, or site of reconnection, yet current methods of locating the reconnection site either do not uniquely identify the the X-line or have not been tested when asymmetries in field strength and plasma density and temperature are present. Furthermore, identification of spacial structures (such as the X-line) as they traverse satellites is limited by hardware constraints. This thesis proposes a new method of locating the reconnection site for asymmetric …
Streamline Geometry Analysis Of Turbulent Fluid Flows, Michael Dunstan
Streamline Geometry Analysis Of Turbulent Fluid Flows, Michael Dunstan
Master's Theses and Capstones
Energy in turbulent flows is transported down coherent vortical structures of different shapes and sizes. Experiments have shown that the vortical structures contain field lines that are curved in nature. Several procedures have been investigated to determine the size and location of the coherent vortical motions, as of yet there has not been a widely accepted method that exactly depicts these structures. Among the current methods of determining the coherent features of the flow, structures determined by the second largest eigenvalue of the symmetric part of the gradient of the Navier-Stokes equation has received recent attention. Another method proposed is …
Forcing Mutual Coherence In Diode Laser Stacks, Jonathan R. Wurtz
Forcing Mutual Coherence In Diode Laser Stacks, Jonathan R. Wurtz
Honors Theses and Capstones
This paper will discuss both theoretical and experimental attempts to improve the spatial beam quality of diode laser stacks using an external optical system. An overview and derivation of the mathematics of both the optical system and diode lasers will be discussed. The experimental setup will be presented, as well as the fundamental theoretical and experimental results that suggest the external optical system used for this thesis fails to improve the beam quality of a diode laser stack.
Re-Analysis Of The World Data On The Emc Effect And Extrapolation To Nuclear Matter, Stacy E. Karthas
Re-Analysis Of The World Data On The Emc Effect And Extrapolation To Nuclear Matter, Stacy E. Karthas
Honors Theses and Capstones
The EMC effect has been investigated by physicists over the past 30 years since it was discovered at CERN. This effect shows that the internal nucleon structure varies when in the nuclear medium. Data from SLAC E139 and JLab E03 103 were studied with the Coulomb correction and directly compared. The Coulomb distortion had a greater impact on the JLab data due to slightly lower energies and different kinematics. The EMC ratio was found to have a dependence on a kinematic variable, which was removed when Coulomb corrections were applied. The methodology was developed to apply Coulomb corrections, which had …