Browsing Physics - Bachelor's degree by Title
Now showing items 71-90 of 487
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Dark energy and CMB anisotropy
(Massachusetts Institute of Technology, 2004)According to the WMAP and earlier COBE observations, the Cosmic Microwave Background (CMB) anisotropy power on large angular scales appears to be significantly lower than predicted by the standard model of cosmology. We ... -
Dark matter dynamics in the early universe
(Massachusetts Institute of Technology, 2012)We study a new form of dark matter interaction which may significantly affect the thermal relic abundance of dark matter. This new interaction takes the form C+D --> C+[phi], where D is the dark matter species present ... -
Dark noise calibration of the Super-Kamiokande outer detector
(Massachusetts Institute of Technology, 2004)The process for calculating the single photoelectron gain in the Super-Kamiokande outer detector has been streamlined. The original technique used optic fibers to expose the detector's photomultiplier tubes to known amounts ... -
The DarkLight experiment : searching for the dark photon
(Massachusetts Institute of Technology, 2012)We describe a setup to search for the existence of a massive gauge boson A', the "dark photon," mediating dark matter interactions with coupling strength [alpha]'. In certain models, the A' decays promptly but invisibly ... -
Demonstrating visibly transparent solar cells and photodetectors
(Massachusetts Institute of Technology, 2017)The fabrication of inorganic semiconductor devices, such as silicon solar cells and photodetectors, is despite significant research still expensive and energy intensive. Especially for solar cells, high upfront costs are ... -
Depletion, quantum jumps, and temperature measurements of ⁸⁸Sr⁺ ions in a linear Paul Trap
(Massachusetts Institute of Technology, 2006)This thesis describes the design and construction of two laser systems to probe the 674nm transition of ⁸⁸Sr⁺ ions in a linear Paul trap. The first laser system made use of a molecular transition in Iodine to stabilize the ... -
Design and fabrication of sharp bend photonic crystal slab waveguides
(Massachusetts Institute of Technology, 2001)A periodic arrangement of atoms in a crystal presents a periodic potential for electrons. The bragg diffraction of electrons from the atoms may lead to a band gap, which represents a range of frequencies the electrons ... -
The design and implementation of a display-oriented editor writing system
(Massachusetts Institute of Technology, 1979) -
The design and implementation of a multi-programming virtual memory operating system for a mini-computer
(Massachusetts Institute of Technology, 1979) -
Design and implementation of electrokinetic probes for cartilage diagnosis
(Massachusetts Institute of Technology, 1999) -
Design of a high index contrast arrayed waveguide grating
(Massachusetts Institute of Technology, 2003)Arrayed waveguide gratings (AWGs) are useful structures for the implementation of wavelength division multiplexing. The AWG consists of an input splitter, a dispersive waveguide array which creates the wavelength demultiplexing ... -
Designing and testing the neutron source deployment system and calibration plan for a dark matter detector
(Massachusetts Institute of Technology, 2011)In this thesis, we designed and tested a calibration and deployment system for the MiniCLEAN dark matter detector. The deployment system uses a computer controlled winch to lower a canister containing a neutron source into ... -
Designing nanoparticle self-propulsion With nonequilibrium Casimir physics
(Massachusetts Institute of Technology, 2015)This work presents an analysis of thermal self-propulsion behavior in nanoparticles using several recent advancements in the field of nonequilibrium Casimir physics. We compute fundamental limits on the thermal power ... -
Detection of core-collapse supernovae through joint analysis of LIGO gravitational wave and KamLAND neutrino data
(Massachusetts Institute of Technology, 2016)Introduction: Core collapse supernova are one of the most intriguing astrophysical phenomena. The dying stage of a supergiant star, they occur when the star collapses into a protoneutron star, causing a shock wave and a ... -
Detection of electron polarization in beta decay by double electron scattering : (proof of the non-conservation of parity in beta decay)
(Massachusetts Institute of Technology, 1960) -
Determination of the angular distribution of cosmic rays at sea level
(Massachusetts Institute of Technology, 2010)In this thesis, a muon telescope is setup in order to measure the zenith angular distribution of cosmic ray muons at sea level. The setup consists of two long scintillator counters with double-ended readout. Previous ... -
A determination of the effective thickness of a liquid deuterium target for a quasielastic scattering experiment
(Massachusetts Institute of Technology, 2010)The effective thickness of a liquid deuterium target was determined by measuring the yield of the neutron-deuteron elastic scattering cross section. The flux of incident neutrons was determined by a fission ionization ... -
Determination of the splash properties of various liquids using high-speed photography.
(Massachusetts Institute of Technology, 1976) -
Determining the jet opening-angle of gamma-ray bursts
(Massachusetts Institute of Technology, 2004)There is growing scientific agreement that at least some cosmic gamma-ray bursts (GRBs) coincide with the deaths of rapidly rotating massive stars - dubbed "hyper-novae." In 1987, a supernova (SN 1987A) was detected in the ... -
Development and characterization of the magnetic plasmatron
(Massachusetts Institute of Technology, 2004)The purpose of this thesis is to investigate the plausibility of developing a low current plasmatron fuel reformer that utilizes magnetic fields to hydrodynamically induce spin of the arc discharge. The proof of principle, ...
