Atom Traps
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Influence of Nanoxides on Diffusivity and Solubility of Hydrogen in Pd-based alloys
The hydrogen interaction in palladium alloys with addition of Ce, Zr and Y was studied. These alloys are produced by arc-melting and then cold rolled into thin foils. Heat treatment at 800ºC for 24h in air atmosphere is applied to induce internal oxidation. Hydrogen permeation tests and TDS (Thermal Desorption Spectroscopy) are carried out to evaluate hydro
Mat. Res.. Publicado em: 11/01/2018
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2. Geração e proteção de estados comprimidos do campo e estados atômicos emaranhados em cavidades ópticas
In this work we investigated the engineering of interactions and reservoirs in the context of Cavity Quantum Electrodynamics. The investigated system consists of two identical three-level atoms trapped in two distinct traps, but inside the same optical cavity, inte- racting with the cavity mode and driven by classical .elds to manipulate the atom-.eld intera
Publicado em: 2010
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3. Produção experimental de excitações topológicas em um condensado de Bose-Einstein / Experimental production of topological excitations in a Bose-Einstein condensate
Neste trabalho descrevemos a produção e estudo de excitações topológicas em um condensado de Bose-Einstein em átomos de Rubídio-87. O condensado é produzido através de resfriamento evaporativo forçado por rádio-freqüência em uma armadilha puramente magnética do tipo QUIC. A armadilha magnética é carregada por um sistema de duplo-MOT. A temper
Publicado em: 2008
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4. Studies on Optical Shielding of Cold Collisions / Estudo de Blindagem Óptica em Colisões Frias
In this work, we showed that is possible to suppress most of the inelastic processes that may cause losses of atoms in a magneto-optical trap. Our results reveal that the process of optical shielding (demonstrated by our group, for the first time to photoassociative ionization - Phys. Rev. Lett. 73, 1911 (1994)) is much more general than it was supposed. Eve
Publicado em: 1998
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5. Caracterização de uma armadilha magneto-optica para átomos de sódio em célula de vapor. / Characterization of a magneto-optical trap for sodium atoms in vapor cell.
Among the various atomic motion control techniques using radiation pressure magneto-optic trapping has been looked at with great enthusiasm because it produces samples of cold atoms (temperatures about μK), with high densities and confined in small regions of space. Due to these motivations the efforts for developing and characterizing these atoms traps
Publicado em: 1994
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6. Design for an optical cw atom laser
A new type of optical cw atom laser design is proposed that should operate at high intensity and high coherence and possibly record low temperatures. It is based on an “optical-shepherd” technique, in which far-off-resonance blue-detuned swept sheet laser beams are used to make new types of high-density traps, atom waveguides, and other components for ac
National Academy of Sciences.
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7. Self-excited mono-ion oscillator
We propose self-excitation as a potentially more sensitive technique for studying a mono-ion oscillator of frequency vz ≈ 0.1-100 MHz. This technique also makes only low demands on the harmonicity of the ion oscillation. It should therefore work with inexpensive, easily constructed rf traps. In our analysis, the bound ion between the trap electrodes is rep