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 942 for “"Dipole"”.
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Phase Transitions in Dipole-Dipole Interacting Atomic Systems
… transitions of atomic systems with interparticle dipole-dipole interaction controlled by laser fields are studied. In the first half of the thesis, a system with externally polarized dipole molecules at half-filling moving along a one-dimensional zigzag chain is studied, including groundstate …
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Dipole-Dipole Interactions in Alkali Halides Doped with Hydroxyl
Submitted by Jesse Garrison (jagarris@illinois.edu) on 2011-06-10T16:27:13Z No. of bitstreams: 1 1981_potter.pdf: 3658463 bytes, checksum: 3b170f5a7503b36a6d1012bd8b556457 (MD5)
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Resonant Dipole-Dipole Energy Transfer Dynamics in a Frozen Rydberg Gas
<p>The dipole-dipole interaction strongly couples ultracold highly excited atoms, known as Rydberg atoms, and is the dominant mechanism for energy exchange among such atoms on microsecond time scales. I present the results of experiments that investigate this interaction using rubidium atoms …
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Broadband Helical Dipole Arrays
Made available in DSpace on 2014-12-08T22:23:53Z (GMT). No. of bitstreams: 1 6604305.pdf: 4848445 bytes, checksum: c3ad9d46a6ac38b12e2e8584b9595b2b (MD5) Previous issue date: 1965
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Dipole interactions in crystals
Thesis (Ph.D.) Massachusetts Institute of Technology. Dept. of Physics, 1947.
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Optical cooling using the dipole force
… formalism to explore the use of the retarded dipole-dipole interaction as a means of both enhancing the efficiency of micromirror cooling systems and rendering the laser cooling of atoms and molecules less species selective. In particular, I identify the 'external cavity cooling' mechanism, …
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Electromagnetic formation flight dipole solution planning
… functions of each satellite's magnetic dipole (which is directly related to the current in the electromagnets). Methods for solving the equations of motion are presented along with examples showing that any desired maneuver can be performed as long as the formation's center of mass is …
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Dipole photonic resonators and analogs of matter
… designing a PC that confines only the TM110-like dipole Bloch state and forces the propagation of all other EM states. This dipole PC resonator was tuned and optimized for crabbing application at 11.9942 GHz (operational frequency of the crab cavity at CLIC). Also in this thesis, a carefully …
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Neutron electric dipole moment and dressed spin
The neutron electric dipole moment (EDM) experiment has played a unique role in examining the violation of fundamental symmetries and understanding the nature of electroweak and strong interaction. A non-zero neutron EDM is one of direct evidence for CP and T violation and has the potential to …
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The giant dipole resonance in Silicon-28
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-20T21:37:20Z No. of bitstreams: 1 1980_gulbranson.pdf: 3567574 bytes, checksum: 3389b15e64072bb8b3462cb2df530684 (MD5)
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Dipole bands in 195BI and 197BI nuclei
High-spin states in 195Bi and 197Bi have been populated using the 181 Ta(20Ne,6n) and 181Ta(22Ne,6n) reactions respectively, both at a beam energy of 125 Mev.
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Plasma stability in a dipole magnetic field
The MHD and kinetic stability of an axially symmetric plasma, confined by a poloidal magnetic field with closed lines, is considered. In such a system the stabilizing effects of plasma compression and magnetic field compression counteract the unfavorable field line curvature and can stabilize …
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Dipole moment effects in photodetachment from cluster anions
… from experimental studies on the effect of the dipole moment on photodetachment from solvated iodide anion are presented. The major advantage of using solvated atomic iodide anions: I<super>−</super>·(Y)<sub><italic>n</italic></sub>: Y = solvent molecule, <italic>n</italic>=1 to 3)) …
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Dual band dipole antenna with harmonic suppression capability
… used by almost everyone. In this work, multiband dipole antenna with harmonic suppression capability has been designed. The dual-band dipole antenna has been vigorous, since it is simple, easy to be designed and fabricated. However, higher order modes (HOM) in these multiband antennas gives …
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Development of harmonic suppressed reconfigurable fractal dipole antenna
… configuration in the form of fractal dipole antenna that is integrated with the stubs and tapered balun has been designed and tested in this study. The Koch dipoles are double-sided structure while the tapered balun is triangular. Initial design is based on a 0.9GHz linear …
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Triple band dipole antenna with harmonic suppression capability
… used by almost everyone. In this work, multiband dipole antenna with harmonic suppression capability has been designed. The Triple-band dipole antenna has been vigorous since it is simple, easy to be designed and fabricated. However, higher order modes (HOM) in these multiband antennas gives …
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Characteristic mode theory for closely spaced dipole arrays
… behavior of these closely spaced arrays of dipoles is explained. These concepts are then translated to antenna design parameters such as element input impedance and array current distributions for beam scanning and sidelobe reduction. The modes are then calculated and interpreted for higher …
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GPR propagation simulation and fat dipole antenna design
… wide-band antenna with implementation of the fat dipole design. The design considerations applied to improve antenna performance include antenna feed configurations, substrate width, aperture dimension, cavity implementation, terminating resistance. antenna impedance and balun matching. After the …
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X-ray diagnostics for the Levitated Dipole Experiment
Initial plasma experiments in the Levitated Dipole Experiment focus on producing hot electron, high beta plasmas using a supported dipole configuration. Plasmas are created using multifrequency ECRH and it is therefore expected that most of the plasma energy will be stored in the fast electrons, Te …
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