Now showing items 358-377 of 475

    • The scattering and shrinking of a Gaussian wave packet by delta function potentials 

      Sun, Fei, S.B. Massachusetts Institute of Technology (Massachusetts Institute of Technology, 2012)
      In this thesis, we wish to test the hypothesis that scattering by a random potential causes localization of wave functions, and that this localization is governed by the Born postulate of quantum mechanics. We begin with ...
    • Scattering properties of polyacrylamide gels and their relation to protein electrophoretic migration 

      Cook, Laurel A. (Laurel Anne) (Massachusetts Institute of Technology, 1994)
    • Search for evidence of cosmic ray acceleration by supernova Remnant Kes 41 using the Fermi LAT 

      Joubert, Timothy Robert (Massachusetts Institute of Technology, 2013)
      The analysis presented in this paper incorporated photon events received during the full run time of the Fermi Gamma Space Telescope (FGST) Large Area Telescope (LAT) to date. By studying the [gamma]y emission of the ...
    • Search for Higgs to invisible decays in vector boson fusion production 

      Dominguez, Patricia Zoila (Massachusetts Institute of Technology, 2017)
      A search for invisibly decaying Higgs bosons is performed using the vector boson fusion production (VBF) mode. This search was conducted using Run 2 data, collected by the CMS detector at the LHC in 2016 at a center of ...
    • The search for orbital decay in hot Jupiters 

      Patra, Kishore Chandra (Massachusetts Institute of Technology, 2018)
      We summarize our results, so far, in the search for orbital decay in exoplanets. Orbital decay is the gradual shrinkage of the planetary orbit due to tidal dissipation. We ranked currently known exoplanetary systems according ...
    • Search for pre-existing Delta states at BLAST from ²H(e,e'[Delta]⁺⁺ 

      Greene Chana M. (Chana Michelle) (Massachusetts Institute of Technology, 2006)
      At the MIT-Bates Linear Accelerator Center a comprehensive study of low-Q2 spin-dependent electron scattering from deuterium has been carried out using the Bates Large Acceptance Spectrometer Toroid (BLAST). This experiment ...
    • Search for rare events in [the square root of sigma nu nu] = 200 GeV Au+Au PHOBOS data 

      Mott, Alexander (Alexander Robert) (Massachusetts Institute of Technology, 2009)
      In this analysis, we set an upper bound on the rate of rare events: events whose dN/dn distribution deviates more than statistically from the ensemble average dN/dn distribution for s [the square root of sigma nu nu] = 200 ...
    • Search for the standard model Higgs Boson in the Z gamma channel 

      Singh, Kevin (Massachusetts Institute of Technology, 2013)
      The Higgs decay into a photon and a Z boson, with the Z boson decaying into an electron-positron pair (electron channel) or muon-antimuon pair (muon channel), allows for accurate reconstructions of the Higgs boson mass and ...
    • Second order critical point in QCD phase diagram 

      Assawasunthonnet, Wathid (Massachusetts Institute of Technology, 2009)
      In this thesis I explore the theoretical model based on Asakawa and Nonaka's idea[l]. I start by arguing that the critical point of the QCD phase diagram is second order and belongs to the three dimensional Ising model ...
    • Self-adjoint extensions to the Dirac Coulomb Hamiltonian 

      Brainerd, Andrew Eric (Massachusetts Institute of Technology, 2010)
      The Dirac equation is the relativistic generalization of the Schrödinger equation for spin 1/2 particles. It is written in the form -ihc -ihac OXIa+t' Omc 29 = ih-o (1.1) where V) is a four component Dirac spinor and the ...
    • Self-assembly of conformal polymer electrolyte film for lithium ion microbatteries 

      Bieber, Christalee (Massachusetts Institute of Technology, 2007)
      I apply the theory of polar and apolar intermolecular interactions to predict the behavior of combinations of common battery materials, specifically the cathode substrate lithium cobalt oxide (LCO) and the polymer separator ...
    • A self-triggered readout for a time projection chamber 

      Werner, Andrew Thompson, 1981- (Massachusetts Institute of Technology, 2004)
      A self-triggering readout for a time projection chamber (TPC) is presented, with applications to novel forms of data acquisition for high energy physics application. The construction and initial testing of the readout ...
    • Shuttling of ions for characterization of a microfabricated ion trap 

      Fisher, Zachary (Zachary Kenneth) (Massachusetts Institute of Technology, 2012)
      In this thesis, I present experimental results demonstrating the characterization of a planar Paul trap. I discuss the theory of ion trapping and analyze the voltages required for shuttling. Next, the characteristics of a ...
    • Signal variation in single particle aerosol mass spectrometry 

      Wissner-Gross, Zachary Daniel (Massachusetts Institute of Technology, 2007)
      Rapid and accurate detection of airborne micro-particles is currently an important problem in national security. One approach to such detection, bioaerosol mass spectrometry (BAMS), is currently under development at Lawrence ...
    • Signatures of hydrodynamic transport in an electron system 

      Guo, Haoyu, S.B. Massachusetts Institute of Technology (Massachusetts Institute of Technology, 2018)
      Electrons in strongly-correlated systems move in a neatly coordinated manner, in many ways resembling the movement of viscous fluids and leading to surprising collective behaviors. Here we explore how the hydrodynamic ...
    • Simulated liquid argon interactions with neutrons 

      Harrington, Kathleen M (Massachusetts Institute of Technology, 2012)
      The GEANT4 physics simulation program is known to have errors in how hadronic interactions are implemented. This has the potential to cause errors in the Monte Carlos used to determine the expected neutron backgrounds in ...
    • Simulated pion photoproduction experiments 

      Howe, Ethan (Ethan Gabriel Grief) (Massachusetts Institute of Technology, 2005)
      Introduction: In this paper, I will be assessing the capabilities of the Neutral Meson Spectrometer (NMS) detector in a planned experiment at the High Intensity Gamma Source at Duke University. I will review the relevant ...
    • Simulating scanning tunneling microscope measurements 

      Venkatachalam, Vivek (Massachusetts Institute of Technology, 2006)
      One of the largest problems in scanning tunneling microscopy design is noise control. It is the burden of the designer to determine if money should be used to build a floating room for vibration isolation or for top-of-the-line ...
    • Simulation of a pion photodetection experiment 

      Solis Ortíz, Angel Roberto (Massachusetts Institute of Technology, 2006)
      In this thesis we asses the capabilities of the Crystal Box detector and evaluate its advantages over the Neutral Meson Spectrometer (NMS) detector in a planned experiment at the High Intensity Gamma Source (HI[gamma]S) ...
    • Simulation of measuring bottom quark flow in heavy ion collisions using the CMS detector 

      Franke, Arthur James (Massachusetts Institute of Technology, 2007)
      In this thesis, I carried out a simulation study to characterize the measurement of bottom quark flow in relativistic Pb+Pb collisions using the Compact Muon Solenoid experiment. The Hydjet event generator is used to produce ...