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 20 of 24 for “"Particle Energy"”.
-
A search for supersymmetry with the ATLAS detector, and the use of machine learning techniques for object classification in high energy physics
… the use of neural nets on calorimeter data for particle-type classification, particle energy regression, and shower generation.
-
High-resolution multi-wavelength study of the jet in 3C273
… for the jet and determine the run of the maximum particle energy. The decrease of the maximum particle energy along the jet is much slower than expected from the observed synchrotron emission. We find no evidence for localised acceleration or loss sites. We show that relativistic beaming and/or …
-
Simulation, design and construction of a gas electron multiplier for particle tracking
The biological effects of charged particles is of interest in particle therapy, radiation protection and space radiation science and known to be dependent on both absorbed dose and radiation quality or LET. Microdosimetry is a technique which uses a tissue equivalent gas to simulate microscopic …
-
Alpha decay of excited states of carbon-12
… bombarded by monoenergetic fast neutrons. Alpha-particle decays of carbon nuclei have been separated from other events by a specialised application of the pulse shape discrimination technique. A numerical analysis of the data has yielded alpha-particle energy spectra over a wide energy range. A …
-
Measurement of work function in CF₄ gas
… many applications, especially as a drift gas in particle detection chambers. In order to make accurate measurements of incident particles the properties of the drift gas must be well understood. An important property of CF4 which is important for determining particle energy in detectors, the work …
-
Spin effects in single-electron transistors
… parallel to the motion of the electrons, single-particle energy levels undergo Zeeman splitting according to their spin. The g-factor describing this splitting is extracted in the spin-flip inelastic cotunneling regime. The Kondo splitting is linear and slightly greater than the Zeeman splitting. …
-
Neutrino interaction vertex reconstruction and particle identification in the MicroBooNE detector
… neutrino interaction vertex reconstruction and particle identification (PID) in the MicroBooNE detector. The detector comprises a liquid argon time-projection chamber (LArTPC) with a light-collection system, permitting precise tracking of neutrino interaction final states. MicroBooNE's primary …
-
Impact of x-ray dose on the response of CR-39 nuclear track detector to 1-5.5 MeV alphas and 0.5-9.1 MeV protons for spectroscopy at the OMEGA Laser Facility and the National Ignition Facility
… impact the CR-39 response to incident charged particles. To determine the impact of x-ray exposure on the CR-39 response to protons and alpha particles, a thick-target bremsstrahlung x-ray generator was used to expose CR-39 to various doses of 30 and 8keV Cu-K[alpha] and K[beta] x-rays. The …
-
Electron equations of state during magnetic reconnection
… lines in a plasma that converts stored magnetic energy into particle energy in a wide range of environments. It is a source of energetic particles in the solar corona and wind, and in planetary magnetospheres. Disruptive reconnection in laboratory fusion experiments rapidly deconfines the plasma. …
-
Double streaming at 35 AU during the coronal mass ejections of March 1991
… to be a site of magnetic reconnection, where energy in the field is being converted into particle energy. We speculate that the free energy involved in the earlier double streaming events is somehow related to this magnetic reconnection process, although we have found as yet no direct causal …
-
MEASUREMENTS OF TRANSVERSE SPIN DEPENDENT DI-PION AZIMUTHAL CORRELATION ASYMMETRY AND UNPOLARIZED DI-PION CROSS-SECTION IN PROTON-PROTON COLLISIONS AT A CENTER-OF-MASS ENERGY OF 200 GeV AT STAR
… were used in conjunction to measure outgoing particle energy, tracking, and identification.
-
An investigation of lattice dynamics using waveguide arrays
… Schr¨odinger equation describing the motion of a particle in a periodic potential. This close correspondence means that the evolution of the light mimics the complex dynamics of a quantum particle in a lattice. This mapping combined with the powerful capabilities of ultrafast laser inscription to …
-
Transport in chaotic magnetic fields
… transport properties of magnetic field lines and particles in three related systems: the sine field, the sine field superimposed with a constant background field, and a time varying sine field. We also compare results with the Arnold-Beltrami-Childress (ABC) field. In the time-independent sine …
-
Remote detection of fissile material : Cherenkov counters for gamma detection
… and an ability to significantly suppress lowenergy background from linear electron accelerators. Water Cherenkov Detectors (WCD) were selected because of their transportability, scalability, and an inherent energy threshold. The main objective of this thesis was to design a large-size WCD …
-
Time dependence in fine-particle systems
… interacting ensemble of Stoner-Wohlfarth fine particles has been investigated. The particles typically represent the elongated single domain ferromagnetic particles that have widespread application in the magnetic recording industry. The particle ensemble considered exhibits both orientational …
-
Histopathological and Molecular Changes in Intestinal Tissue Following Proton Exposure in Varying Mouse Models
… low Earth orbit. Protons, one form of charged particle energy, account for the greatest composition of space radiation. Scientists must better understand the aforementioned risks in order to properly counsel astronauts and health care providers about the possibilities of diseases such as cancer …
-
Topics in Spin-Orbit Coupling in Cold Atoms and Semiconductors
… 1/2 degree of freedom to momentum. The single particle energy spectrum has a low energy band with two minima at non-zero momentum. At low temperatures, a many-body system will condense into these minima. In the presence of vanishing interactions, the ground state wavefunction is found to be …
-
Computational investigation on polycyclic aromatic hydrocarbons in the molecular and solid phases
… observables, namely electron affinity,ionization energy,quasi-particleenergy gap,optical absorption,excitonbindingenergy, and molecular reorganization energies for holesand electrons.For thispart of thework we used the hybrid exchange-correlation functional B3LYP in conjunction with a Gaussian …
-
Large Eddy Simulation of Leading Edge Film Cooling: Flow Physics, Heat Transfer, and Syngas Ash Deposition
… the deposition and erosion of Syngas ash particles in the film cooled leading edge region. Three ash particle sizes of 1, 5, and 10 microns are investigated at all blowing ratios using Lagrangian dynamics. The 1 micron particles with momentum Stokes number St = 0.03 (based on approach …
-
Solar flare gamma-ray spectroscopy with CGRO-COMPTEL
… flares provides important information about 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 …
Page 1 of 2