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 6 of 6 for “"proton acceleration"”.
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Proton acceleration experiment by high intensity laser pulse interaction with solid density target at the Texas Petawatt Laser Facility
… in several laboratory and facilities. Multi-MeV proton and ion beams from plasma produced by this interaction is one important application research area of HEDP. In this thesis, the basic theory of hot electron generation associated with proton acceleration will be introduced. A basic proton …
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Investigation of laser-driven particle acceleration for the development of tunable ion sources for applications in high energy density science
… isotope production for medical applications, proton cancer therapy, and fusion energy schemes. This thesis focuses on laser-driven proton acceleration and adds to the existing foundation of work in the area by investigating new empirical relationships, conducting new measurements of the …
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Increased Proton Energies - Above the ~ 60 MeV Empirical Barrier, from High-Contrast High-Intensity Short-Pulse Laser-Interactions with Micro-Cone Targets
… targets, made from Au, yielded an increase in proton energy from 19 MeV to > 30 MeV, and in laser-proton conversion efficiencies from 0.5 % to 2.5 %, as compared to flat-foil targets. These results were postulated to stem from improved laser guiding toward the cone tip, which would lead to …
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generation and transport of high-current relativistic electron beams in high intensity laser-solid interactions
… of a 2D Cu Kα imager and the TNSA-generated proton beam. Analytical models together with a 3D hybrid-PIC code are employed to simulate the beam properties in solids. The effects of the self-generated fields on the fast electron beam transport, the effect of the preplasma density scale length …
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Supernovae as gamma ray emitters from the MeV to the TeV
… are expected to be ""thick"" to cosmic-ray protons and thus act as ""calorimeters"", where a substantial fraction of cosmic-ray energy input is emitted in gamma rays. Here we build a one-zone, ""thick-target"" model implementing calorimetry and placing a firm upper bound on gamma-ray …
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Solar flare gamma-ray spectroscopy with CGRO-COMPTEL
… high-energy particles in solar flares. Energetic protons and ions interact with the solar atmosphere, giving rise to nuclear line emission at MeV energies and higher energy photons from the decay of neutral and charged pions. Electrons interact with the solar atmosphere producing a bremsstrahlung …