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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 20 of 155 for “"Energy spectrum"”.
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Development of Lineal Energy Spectrum-Based Biological Effects Models for Protons
… of microdosimetric spectra (specifically, lineal energy) for protons. SuperTrack, a GPU-accelerated tool for calculation of microdosimetric spectra was developed and is capable of computing lineal energy spectra up to 5000x faster than using Geant4 directly. Proton lineal energy spectra generated …
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Low energy photon mimic of the tritium beta decay energy spectrum
… effects associated with tritium (and low energy electrons in general). However, there are complications regarding the dosimetry of tritium, as well as difficulties in handling and using tritium for the purposes of biophysics experiments. To avoid these difficulties, an experiment has been …
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Neutron dosimetry, moderated energy spectrum, and neutron capture therapy for ²⁵{45}R²Cf medical sources
… determine the absorbed neutron dose and neutron energy spectrum from 252Cf in a variety of clinically relevant materials. Herein, a Maxwellian spectrum was used to model the 252Cf neutron emissions within these materials. 252Cf mixed-field dosimetry of Applicator Tube (AT) type sources was …
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Disaggregated Seismic Hazard and the Elastic Input Energy Spectrum: An Approach to Design Earthquake Selection
… of the hazard. The elastic input energy spectrum is an alternative to the elastic response spectrum for these types of analyses. The input energy combines the elements of amplitude and duration into a single parameter description of the ground motion that can be readily …
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The Effect of The Coulomb Field on The Energy Spectrum of Electrons Emitted in Beta-Decay
Made available in DSpace on 2015-05-12T17:12:30Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6206195.PDF: 2808567 bytes, checksum: d85f2b9acdb0ef4cf586c5c2d8f5be64 (MD5) Previous issue date: 1962
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An Experimental Study of the Time Dependence of the Beta Energy Spectrum From Uranium-235 Fission Fragments
Made available in DSpace on 2014-12-09T19:52:18Z (GMT). No. of bitstreams: 1 6607763.pdf: 4018690 bytes, checksum: 6b0649452ef81906e1a88d6d6914fd7f (MD5) Previous issue date: 1966
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Measurement and Interpretation of Moments of the Combined Hadronic Mass and Energy Spectrum in Inclusive Semileptonic B-meson Decays
… the invariant mass of the charmed meson m_X, its energy in the B-meson rest-frame E_X, and a constant \tilde{\Lambda} = 0.65 GeV, n_X^2 = m_X^2 c^4 - 2 \tilde{\Lambda} E_X + \tilde{\Lambda}^2. The moments <n_X^k> with k=2,4,6 are measured as proposed by theory to constrain assumptions made …
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PREDICTIONS OF SIGNIFICANT WAVE HEIGHT IN LAKE OKEECHOBEE, FLORIDA USING APPROACHES RELATED TO SIMPLIFIED STOCHASTIC PROCEDURE AND WAVE ENERGY SPECTRUM
… the simplified stochastic procedure and wave energy spectrum method is presented. The stochastic procedure related models are Regression Model 1 (RM1), Regression Model 2 (RM2) and Perceptron Least Square Method (PLSM). A new wave spectrum based model, Modified Pierson-Moskowitz (MPM) Spectrum …
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Modeling the affect of dark matter distributions in the Milky Way on the component of the cosmic rays energy spectrum as incident on Earth
… distribution in the galaxy on the positron spectrum on earth. We wrote code to simulate two district dark matter distribution functions as well as the annihilations which convert them into positrons. We then channeled the results into a galaxy propagation software package GALPROP and …
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Beam characterization at the neutron radiography reactor
… length-to-diameter ratio, neutron flux profile, energy spectrum, image quality, and beam divergence, is vital for producing quality radiographic images. This thesis characterized the east neutron imaging beamline at the Idaho National Laboratory Neutron Radiography Reactor (NRAD). The experiments …
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Extension of Belyaev-Zelivinski method of rotation as intrinsic nuclear excitation
… term naturally occurs in the energy spectrum of a rotational band for even-even nuclei. This is accomplished by modifying the assumption that Belyaev and Zelevinski imposed on their |n> states. This leads to a definite relationship between the coefficient of the J(J+1) and …
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A Monte Carlo analysis of neutron thermalization in graphite
… source. The time dependence of neutron flux, energy spectrum as a function of time, and various reactor parameters such as Fermi Age, slowing dotm time, and diffusion length in graphite will be measured using the pulsed source method. This thesis is a Monte Carlo calculation of the results to …
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The cosmic ray muon energy spectum via Čerenkov radiation
… a basic Cerenkov detector to measure the energy spectrum of cosmic ray muons for use in the graduate experimental physics courses, 8.811/2. The apparatus consists of a light-tight central volume with a phototube to detect the Cerenkov radiation of muons whose speed is higher than the speed …
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Radiation dose measurement and prediction for linear slit scanning radiography
… part of this report. This method generates the energy spectrum for a particular set of technique factors, simulates a filter through which the beam is attenuated and then calculates entrance dose directly from this energy spectrum. The energy spectrum is then combined with previously generated …
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Aspects of quantum theory in 1+1 and slightly more dimensions
… approximation scheme for determining the fermion energy spectrum and apply it to (1 + 1 )-dimensional two-component fermions coupled to scalar field solitons. Second, we study (1+1)-dimensional behavior in particles falling toward a Schwarzchild black hole . Using a non-covariant choice for the …
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Solar thermophotovoltaic efficiency potentials : surpassing photovoltaic device efficiencies
Solar energy has gained more attention in recent years due to increased concerns about the continued use of fossil fuels. Solar energy is a form of renewable energy, and solar energy technology does not release greenhouse gases responsible for climate change. While photovoltaic (PV) cells, which …
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Electron Generations and Transportation in Fast Ignition Experiments
… ignition alongside the various relevant electron energy spectrum diagnostic techniques. The experiment was performed using the Vulcan PetaWatt laser at the Rutherford Appleton Laboratory. Capsules in which a re-entrant gold cone has been imbedded were involved in the experiment as targets. Gold …
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Internal Radioactive Source Calibration of the Borexino Solar Neutrino Experiment
A measurement of solar neutrinos below 1 MeV of energy will further our knowledge of the neutrino's mass and mixing properties and will provide a probe to possible physics beyond the standard model of particle physics, as well as advance our understanding of energy production in the Sun. Borexino …
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