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 64 for “"Physics--Atomic"”.
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An approach to bridging atom optics and bulk spin quantum computation
… an exploration in quantum computation and modern physics. Atomic, molecular, and optical (AMO) physics, a centerpiece of modern physics, originated in the 1950's with the discovery of nuclear magnetic resonance (NMR), a field which has mostly been left behind in physics. However, NMR has recently …
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Ultracold quantum gases in three-dimensional optical lattice potentials
… that enter a new regime in the many body physics of ultracold atomic gases. A Bose-Einstein condensate is loaded into a three-dimensional optical lattice potential formed by a standing wave laser light field. In this novel quantum system we have been able to both realize a quantum phase …
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The effect of tool sharing on reliability of flexible manufacturing systems.
A major consideration in opting for reliability and flexibility in Flexible Manufacturing Systems (FMSs) is to enhance the availability of resources in order to maintain an uninterrupted production. This means that sufficient redundancies must be foreseen at the preliminary production planning …
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Investigation spectroscopique du néon entre 42 et 44.5 eV.
Cette thèse porte sur la prise de données nouvelles, à l'aide d'une méthode spectroscopique par impact électronique, pour l'étude des niveaux électroniques du néon dans les intervalles compris entre 42 eV et 43.1 eV et entre 43.2 eV et 44.5 eV. En plus, des prédictions basées sur les éléments …
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Computational Analysis of Silicon Nanoelectromechanical Systems
… properties are localized to within one or two atomic layers of the nanowire.
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Topics in the Theory of Quantum Degenerate Gases
… 4He at low temperatures with an empirical interatomic potential by Janzen and Aziz and using the Path Integral Monte Carlo (PIMC) technique. We show that, for the calculation of the second coefficient, the method is successful whereas for the third the particular implementation that we chose …
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Determination of the Helium -6 Nuclear Charge Radius Using High-Resolution Laser Spectroscopy
… +/- 0.056 MHz. Based on this measurement and the atomic theory calculation, the root-mean-square charge radius of 6He was determined to be 2.054 +/- 0.014 fm. Combined with the interaction radius from scattering experiments, the neutron-halo structure of the 6He nucleus was confirmed …
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Vortex Lattices in Rapidly Rotating Bose -Einstein Condensates: Modes, Elasticity, and Melting
"We approach the static elasticity of a vortex lattice using the elastohydrodyamic approach. We derive the elastic Green's function for the vortex lattice, and connect it to the lattice distortion in an inhomogeneous condensate. We find that the longitudinal elastic response of a vortex lattice is …
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An Experimental Study of Stopping Powers for Ions of Intermediate Atomic Numbers
Made available in DSpace on 2015-05-13T15:21:56Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7606702.PDF: 4276564 bytes, checksum: 348106430711334e40a79514912d6e19 (MD5) Previous issue date: 1975
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High Current Ion Emission in Electrohydrodynamic Spraying
Made available in DSpace on 2015-05-13T15:21:59Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7607008.PDF: 3915500 bytes, checksum: 19a77b91d89e61fb52b7e048b73c6dd7 (MD5) Previous issue date: 1975
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X-Ray Generation by Mev Electrons in Silicon: Temperature, Tilt and Thickness Dependence
When relativistic electrons strike a single crystal target, sharp peaks are observed in the x-ray spectrum generated. One type of radiation, called coherent bremsstrahlung, results from coherent electron scattering by atoms arranged on the crystal lattice. The other type of radiation is channeling …
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Optical Processes in Xenon: Multiphoton Ionization and Ultraviolet Photodissociation of the Dimer Ion
… dimer ion (Xe(,2)('+)) quickly forms from the atomic ion, and photodissociation on the 1( 1/2)(,u) (--->) 2( 1/2)(,g) band has been observed after sequential UV pumping. Finally, the role of Xe(,2)('+) in the formation of the excimers XeCl and Xe(,2)Cl has been examined.
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Optical Processes in Krypton and Krypton(2)fluoride: Absolute Cross-Sections for Multiphoton Ionization of Krypton (1S(0)), Photoionization of Metastable Atomic and Molecular States of Krypton, Andabsorption of Krypton(2)fluoride (4-Doublet-Gamma)
A microwave absorption apparatus has been used to measure a cross section for the three-photon, resonantly-enhanced ionization of Kr(('1)S(,0)) at 193 nm. The presence of a two-photon resonance with the Kr 6p 3/2 (,2) level enabled the generation of large electron densities and a measurement of the …
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Optical Emission and Kinetics of High-Pressure Radiation-Produced Noble Gas Plasmas
Made available in DSpace on 2014-12-14T06:25:57Z (GMT). No. of bitstreams: 1 7606987.pdf: 36180939 bytes, checksum: 6ff91f4b7bccbf4426ef56ca8deb13d7 (MD5) Previous issue date: 1975
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An Investigation of the Atomic Fluorine Laser Excited in a Hollow Cathode Discharge
Made available in DSpace on 2014-12-12T20:54:52Z (GMT). No. of bitstreams: 1 7913416.pdf: 3615003 bytes, checksum: fee260921b7daa12863360652be71900 (MD5) Previous issue date: 1978
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Behavior of Helium(triplet-2s) Metastables in Weakly Ionized Helium Plasmas
Made available in DSpace on 2014-12-10T19:06:43Z (GMT). No. of bitstreams: 1 7121183.pdf: 1989202 bytes, checksum: eec68465ebf9c895f07cb57264b8323b (MD5) Previous issue date: 1971
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Complete Temporal Characterization of Single Photons
… bi-photons generated via four-wave mixing in an atomic vapor. We develop an appropriate theoretical model for our experimental settings and describe the involved calculations explicitly. The obtained experimental results show excellent agreement with theoretical predictions for the various …
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Characterization of Magneto-optical Trap For Experiments in Light-Atom Interfacing
This thesis presents the study of atomic cloud density and temperature in a magneto-optical trap (MOT). The purpose is to find the method in obtaining the densest and coldest cloud the setup can produce. In steady state trap, the highest atomic density possible is that of a cloud in multiple …
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Chaos effects in one-dimensional hydrogen, including the high-frequency regime
The system of highly excited hydrogen in combined strong ac and dc electric fields is examined. It is shown that the production and maintainence of effectively one-dimensional states is plausible in this system. The threshold of global classical chaos is calculated using the resonance overlap …
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Experiments Towards the Realization of a Nanofiber Guided Dipole Trap
In this thesis I present a developing project to elaborate a scientific platform towards the realization of light-matter interaction based on tapered optical nanofiber (TNF) that enables optical fields to interface with trapped neutral atoms in their vicinity. In such a configuration, the guided …
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