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.
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Showing 1 to 20 of 497 for “"coulomb"”.
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Coulomb scattering in a magnetic field.
Massachusetts Institute of Technology. Dept. of Geology and Geophysics. Thesis. 1966. Ph.D.
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Towards molecular reconstruction in Coulomb explosion imaging
… reconstruct the molecular structure prior to a Coulomb explosion of the ionized molecule using only the information available at the detector. There are broadly two components to the approach examined here: the forward and the backward (inverse) problems. In the forward problem, we develop a …
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Seismic response of structures with Coulomb damping
The usefulness of Coulomb (friction) damping in earthquake-resistant design of structures is examined by studying the seismic response characteristics of structures with various arrangements of sliding interfaces. First, three basic arrangements are studied for their effectiveness in reducing …
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The theory of Coulomb Drag in Graphene Systems
… two similar problems that combine the theory of Coulomb drag with the emerging field of graphene physics. First, the theory of Coulomb drag between two graphene mono-layers is extended to include finite temperature. It is found that the effect is strongly enhanced at intermediate temperatures by …
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Self-adjoint extensions to the Dirac Coulomb Hamiltonian
… equation. These atoms can be described by a Coulomb potential, V(r) = -Ze 2 /r, where Z is the number of protons in the nucleus and e is the elementary charge. When the nonrelativistic Schrodinger equation is solved for a Coulomb potential, the energy levels are given by the familiar Rydberg …
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Analytical and Numerical Analysis of Static Coulomb Formations
… proximity flying on the order of 10-100 meters, Coulomb thrusting presents a promising alternative to other methods of propulsion. This clean and fuel-efficient propulsion method is being investigated for use in formation flying and virtual structures. In the latter application, the individual …
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Dissociation dynamics in Coulomb explosion imaging of diatomic molecules
Bei der Coulomb Explosion wird die folieninduzierte Dissoziation isolierter Molekülionen gemessen. Um strukturelle Parameter des Moleküls aus diesen Messungen zu extrahieren müssen Annahmen über die Form des dissoziativen Potentiales gemacht werden. Die Benutzung einfacher Coulomb Potentiale …
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Weak interactions and excited states from Coulomb-attenuated DFT
… functionals fail and how a recent modification— coulomb attenuation—can resolve such issues. An outline of basic electronic structure theory is provided in chapter 1, particularly the formulation of the Hartree-Fock approach. This is extended to more sophisticated wavefunction based methods. …
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Noise in coulomb blockaded quantum dots and kondo systems
In this thesis we study the noise in Coulomb blockaded quantum dots in the vicinity of the peak of conductance in a full quantum treatment using the Keldysh technique. In previous work on this system, the emphasis have been on master equation approaches in the shot noise regime. In the vicinity of …
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Coulomb Interactions in Hanbury Brown -Twiss Experiments With Electrons
The second-order correlation function, i.e., the intensity correlation function, is not the only characterization of the two-particle interference. There are other different yet equivalent characterizations, which we examine in this thesis. We investigate the relationship between different …
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Coulomb Correlations in Equilibrium and Nonequilibrium Many -Fermion Systems
The importance of the field of Condensed Matter Physics can hardly be overstated. It deals with matter at everyday energies and with length and times scales in which complex processes are able to occur. It is a field in which much experimental and theoretical effort has been invested. New …
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Coulomb correlations in equilibrium and nonequilibrium many-Fermion systems
The importance of the field of Condensed Matter Physics can hardly be overstated. It deals with matter at everyday energies and with length and times scales in which complex processes are able to occur. It is a field in which much experimental and theoretical effort has been invested. New …
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Coulomb drag in quantum Hall systems near v = 1/2
… fermion approach for theoretical studies of the Coulomb drag between two parallel layers of two-dimensional electron gases in the quantum Hall regime near Landau level filling fraction v = 1/2. Within the composite fermion approach, we use Boltzmann transport theory to determine the …
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Sensor Craft Control Using Drone Craft with Coulomb Propulsion System
The Coulomb propulsion system has no exhaust plume impingement problem with neighboring spacecraft and does not contaminate their sensors because it requires essentially no propellant. It is suitable to close formation control on the order of dozens of meters. The Coulomb forces are internal forces …
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Design Optimization of Slider-Crank Mechanisms Subject to Coulomb Bearing Friction
… as single acting compressors subject to Coulomb bear ing friction. The dynamic force analysis is performed by the solution of a set of nonlinear equations in dimensionless form. The optimization re sults presented are for various cases of inertia, friction, and external loading.</p> …
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Investigation and control of two-dimensional Coulomb crystals for atom-ion mixtures
L'abstract è presente nell'allegato / the abstract is in the attachment
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Coulomb Explosion and Intense-Field Photodissociation of Ion-Beam H2+ and D2+
… in intense laser fields. In this thesis, the Coulomb explosion and photodissociation channel of H2+ and D2+ have been investigated with 790-nm, sub-100-fs laser pulses by employing a high-resolution photofragment imaging technique. Unlike most experiments, where neutral molecules were used as …
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Noise and the full counting statistics of a Coulomb blockaded quantum dot
… thesis, we consider the noise properties of a Coulomb blockaded quantum dot weakly coupled to two non interacting leads. We consider two approaches to calculating the density of states of the quantum dot, the first of which uses a functional integral approach which is difficult to extend to …
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The influence of coulomb potential fluctuation on c-axis tunneling in cuprates
… between two CuO2 planes including the in-plane Coulomb interaction. With a general assumption that the spectral function of the Coulomb uctuation is ohmic, the solution of the transmission rate in the model is obtained by mapping the Coulomb potential fluctuation to phonon coupling of the …
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