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 42 for “"resonance fluorescence"”.
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Helium resonance fluorescence LiDAR
… detec- tors have made this possible. The helium resonance fluorescence LiDAR has the capability to probe the metastable helium content in the thermosphere and exosphere (within 250 km-750 km), where helium (23S) is most abundant. Strategies have been employed to increase the output power of the …
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Resonance fluorescence in nitrogen dioxide.
Thesis: M.S., Massachusetts Institute of Technology, Department of Physics, 1971
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Nuclear resonance fluorescence in Si²⁸
… was investigated using a technique of nuclear resonance fluorescence. A silicon absorber was placed in a collimated beam of gamma rays from the reaction. The direction of collimation with reference to the direction of the bombarding protons governs the exact energy of the ground state games …
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Resonance Fluorescence in a Photonic Crystal
… of three problems, that are related to the full resonance fluorescence problem: a pure dephasing model, the driven atom and resonance fluorescence in free space. In the lowest order of the system-environment coupling, the one-time expectation values for the full problem are calculated …
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Resonance fluorescence of novel quantum emitters
… are investigated using optical spectroscopy and resonance fluorescence (RF). The development of light sources emitting around 1300 nm is motivated primarily by the possibility of their use in information communication applications. The results presented in this thesis pave the way towards …
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Nuclear Resonance Fluorescence in Lead-206,207,208 and Bismuth-209
Made available in DSpace on 2015-05-13T15:21:53Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7524286.PDF: 2412351 bytes, checksum: 0cda674b42367a2b8a9c064cb63aea22 (MD5) Previous issue date: 1975
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Nuclear Resonance Fluorescence in 206, 207, 208Pb and 209Bi
208Pb has both neutron and proton closed shells and is known to be as ideal a nucleus in terms of the shell model as exists. Knowledge of those states in 208Pb and neighboring nuclei that can be excited by radiation is of general value in furthering our understanding of nuclear structure. Nuclear …
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Nuclear resonance fluorescence studies of sodium, aluminum, and phosphorous
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-16T15:56:25Z No. of bitstreams: 1 1981_vodhanel.pdf: 6684934 bytes, checksum: 3ba7105d9baa381270b60576f12f2f15 (MD5)
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Spectrophotometry of Bowen resonance fluorescence lines in three planetary nebulae
This thesis studies the Bowen resonance fluorescence mechanism of OIII in three planetary nebulae: NGC 6210, 7027, and 7662. It utilizes the best spectra to date of this phenomena in the wavelength range of 3100 A-3850 A. The data are presented in the form of flux ratios relative to the strong …
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Monochromator studies of nuclear resonance fluorescence in carbon, silicon, and magnesium
… The energy calibration used the 15.11 MeV resonance in C12 as a standard. The energies of the other resonances were determined to approximately 0.25% relative to the carbon standard. The third facet of the monochromator performance which was especially important was the energy resolution. …
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Development of an isotope-sensitive warhead verification technique using nuclear resonance fluorescence
Nearly three decades after the end of the Cold War, nuclear arms control remains a pressing global issue. Despite obligations under the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) to make 'good-faith efforts' to disarm their nuclear arsenals, the United States and Russia still maintain …
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Measurement of the spectrum of resonance fluorescence induced by a monochromatic field.
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 1976
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Monte Carlo simulations of a physical cryptographic warhead verification protocol using nuclear resonance fluorescence
… exploits the isotope-specific nature of nuclear resonance fluorescence (NRF) measurements to provide a strong indicator of the authenticity of a warhead. To protect against sensitive information leakage, the NRF signal from the warhead is convoluted with that of an encrypting foil containing the …
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Increasing proliferation resistance of sodium fast reactor fuel cycle through use of a nuclear resonance fluorescence detector
… novel detection system that utilizes the nuclear resonance fluorescence (NRF) phenomenon to determine the isotopic composition of materials flowing through the plant. In an aqueous reprocessing facility, the waste stream was identified as a weak point for proliferation resistance. By identifying …
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Resonant elastic photon scattering from the nuclei 88Sr, 89Y, and 90Zr
… of widths, and average total width. Nuclear resonance fluorescence spectra were taken using incident bremsstrahlung with endpoint energies of 9.5 and 6.6 MeV and a Ge(Li) detector. Targets of natural Sr, y, and Zr and an enriched 90Zr target were used. Twelve nuclear levels in 90Zr three …
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Coherent photons from a solid-state artificial atom
… of quantum dot transitions and collection of the resonance fluorescence to address two outstanding challenges: generating dephasing-free single photons for use as flying quantum bits and single-shot spin readout. To this end we investigate the spectral and first-order coherence properties of …
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Wide-field structured illumination microscopy for fluorescence and pump-probe imaging
… imaging. Furthermore, there are few non-fluorescence wide-field super-resolution techniques that can fully utilize the applicable laser power to optimize imaging speed. Structured illumination microscopy is a super-resolution method that relies on patterned excitation. This thesis has …
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Detection of vapor phase mercury species by laser fluorescence methods
… stack gases. It is based on laser-induced fluorescence techniques; photofragment fluorescence spectroscopy for detection of volatile mercury compounds, and resonance fluorescence for detection of elemental mercury. The capabilities and limitations of these detection techniques are …
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Kinetic Studies of Hydroxyl and Hydrogen Atom Reactions
… from 298 to 598 K by the laser photolysis/resonance fluorescence (LP-RF) technique. The transition state theory (TST) analysis coupled with the measurements support the suggestion that the reaction shows significant curvature in the Arrhenius plot. The LP-RF technique was also used to …
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