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.
Results
Showing 1 to 15 of 15 for “"Nuclear physics and radiation"”.
-
The Determination of the Thermal Neutron Flux in a Research Reactor
… of experiments, knowledge of the neutron flux, and of its spatial and spectral energy distribution is of great importance, not only for purposes of experimental reactor physics (e.g., determination of specific data with regard to a new reactor), and for reactor operation (e.g., determination of …
-
Modeling of Outer Radiation Belt Electron Scattering due to Spatial and Spectral Properties of ULF Waves
… (0.5-10 MeV) electrons in Earth's outer radiation belt (r = 3-7 RE, or L-shells: L = 3-7) interacting with magnetospheric Pc-5 (ULF) waves. This dissertation focuses on ideal models for short and long term electron energy and radial position scattering caused by interactions with ULF …
-
A Study of Magnetic Reconnection: From 2D Energy Release to 3D Spreading and Localization
… stored magnetic energy is converted into thermal and kinetic energies of the surrounding plasma. Oppositely directed magnetic field lines break and cross connect due to a dissipative mecha- nism. The now bent, reconnected field lines retreat from the X-line (the location of reconnection) at the …
-
Search for neutrinoless double-beta decay and 42Ar in enriched xenon using the EXO-200 dataset
… neutrino), violate lepton number conservation, and provide a constraint on the neutrino mass scale. The Enriched Xenon Observatory experiment (EXO-200) operated an extremely radio-pure tracking calorimeter filled with liquid xenon enriched in the candidate isotope 136Xe and installed underground …
-
Exclusive Photodisintegration of 3He
… There was good agreement between predictions and measurements in the vicinity of the collinear point in which a proton remains at rest as measured by np coincidences. The measured np FSI peak included additional low-energy neutrons not anticipated by the simulation, which are likely associated …
-
A NEW MEASUREMENT OF THE NEUTRON MULTIPLICITY EMITTED IN 252Cf SPONTANEOUS FISSION
The Precision Reactor Oscillation and SPECTrum (PROSPECT) experiment was designed to probe short baseline oscillations of electron antineutrinos in search of eV-scale sterile neutrinos and precisely measure the 235U reactor antineutrino spectrum from the High Flux Isotope Reactor (HFIR) at Oak …
-
Exploring Hadron Structure Through Monte-Carlo Fits and Model Calculations
… of even smaller particles known as quarks and gluons, there has been a concerted effort to understand the proton's internal structure. There still remain many mysteries about the proton and the theory that describes the interactions within: Quantum Chromodynamics (QCD). The distributions of …
-
Measurement of the Neutron-Neutron Quasifree Scattering Cross Section in Neutron-Deuteron Breakup at 10.0 and 15.6 MeV
… of the cross section for nn QFS at 26 and 25 MeV indicate that rigorous ab-initio theory calculations underpredict the data by more than 15%. This discrepancy can be resolved by increasing the strength of the 1S0 component of the nn interaction; however, this solution creates a level of …
-
Studies of the Electron Neutrino Charged-current Interaction on $^{127}$I
… the rate of neutrinoless double beta decays, and contribute to the design of next-generation solar neutrino detectors. At the Los Alamos Meson Production Facility (LAMPF), an exclusive measurement of the flux-averaged cross section was measured to be [2.84 $\pm$ 0.91 (stat) $\pm$ 0.25 (syst)] …
-
Measuring the Neutron Spin Asymmetry A1n in the Valence Quark Region in Hall C at Jefferson Lab
The quest to understand how the nucleon spin is decomposed into its constituent quark and gluon spin and orbital angular momentum (OAM) components has been at the forefront of nuclear physics for decades. Due to the non-perturbative nature of Quantum Chromodynamics (QCD) - the theory describing how …
-
Fission dynamics in a microscopic theory
… is still one of the most complicated problem in nuclear physics and a full microscopic interpretation is still missing. The establishment of the time-dependent superfluid local density approximation (TDSLDA) and the increasing power of computing resources make the three-dimensional symmetry …