Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Laboratory Astrophysics"”.
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Weakly collisional electrostatic simulations for laboratory astrophysics applications
… relevant plasma processes in a controlled laboratory setting. However, simulations are also essential to increase our understanding in this area, and this mandates the development of a suite of numerical techniques for both theoretical and experimental analysis.<br/><br/>This thesis …
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Observations from a Long Duration X-Ray Source for Laboratory Astrophysics
… a long-duration, broadband x-ray flux source forlaboratory astrophysics experiments. The experiments were done at the OMEGA EP high-power laser facility. This is a four-beam laser system that can deliver up to 4.4 kJ of UV laser energy in pulses of 10 ns duration. By driving sequentially in time …
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Laboratory Astrophysics Studies of Magnetized Collisionless Shock Precursors and the ³He³He Proton Spectrum at the OMEGA Laser Facility
Laboratory astrophysics enables the study of astrophysical systems in the lab. There are broadly two types of laboratory astrophysics experiments: macrophysics and microphysics. Macrophysics experiments study a scaled down version of an astrophysical system while microphysics experiments create a …
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Oscillator strength measurements in singly-ionized, doubly-ionized and neutral lanthanides and transition elements (sm, nd, pr, gd, cu, and fe) using laser-induced breakdown spectroscopy.
… Astrophysicists have therefore looked to laboratory astrophysics experiments to provide accurate atomic data to help resolve these limiting issues. In this dissertation, laser-induced breakdown spectroscopy (LIBS) has been employed for the first time on a large scale as a spectroscopic …
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Novel Schemes for the Collimation of Neutral Electron-Positron Beams
… dynamics, a small scale reproduction in the laboratory would open the doors for a new field of research into the world of laboratory astrophysics. Despite the intrinsic difficulty in reproducing neutral pair plasmas in the laboratory, recent experiments carried out using a laser driven set-up …
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Extending the dielectric formalism in warm dense matter: collisions, dynamic structure factors, and stopping powers
… second in inertial confinement fusion (ICF) and laboratory astrophysics experiments. Furthermore, designing and interpreting results from high energy density (HED) laboratory experiments often relies on simulating the complex plasma and material evolution with sophisticated radiation- or magneto- …
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Direct Ion-Temperature Measurements Using High-Resolution Inelastic X-ray Scattering
… of non-equilibrium HED systems is critical for laboratory astrophysics, materials science, and inertial fusion energy research. A reliance on inferred ion temperatures has led to disagreements across many thermodynamic processes. For example, within the field of electron-ion equilibration, …
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Radiatively Cooled Magnetic Reconnection Experiments Driven by Pulsed Power
… radiative effects in high-energy-density and laboratory astrophysics experiments, and for validation of radiation magnetohydrodynamic and atomic spectroscopy codes.
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The behavior of hydrogen and helium at white dwarf photosphere conditions
… by either hydrogen, helium, or carbon. In astrophysics, WDs are used to determine the age of the universe, to test current stellar evolutionary models, and to constrain the physics of Type Ia supernovae as well as dark energy. Accurate WD masses are needed for all of these applications. In …