Rydberg States
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Estudo da seção de choque de fotoionização de estados de Rydberg / Study of photoionization cross section in Rydberg
Átomos de Rydberg têm como uma de suas principais características o alto numero quântico principal. Uma das conseqüências é a sua dimensão da ordem n2, implicando em um grande momento de dipolo, o que permite usá-los para estudos de interações atômicas com campos eletromagnéticos, incluindo processos de fotoionização. A atenção crescente dad
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/07/2012
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2. Ressonâncias moleculares em estados nP de átomos de Rydberg frios / Molecular resonances in nP states of cold Rydberg atoms
Neste trabalho estudamos a interação entre átomos de Rydberg no estado nP e sua dependência com o campo elétrico dc. Estes estados apresentam ressonâncias Föster para um número quântico principal n menor que 37. Nestes processos de ressonância um par atômico no estado nP muda para um par nS+(n+1)S. Realizamos dois experimentos de evolução tempor
Publicado em: 2010
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3. Molecular ressonances in cold Rydberg atoms / Ressonâncias Moleculares em átomos de Rydberg frios
The understanding of ultralong-range interaction involving cold Rydberg atoms is the main step for use this system in quantum computation. In this work, we have studied interaction involving $nD$ states in a new experimental setup, which allows us to control the electric field in a more efficient way. More specifically, we have studied the collision process
Publicado em: 2009
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4. Estudo das propriedades dinâmicas do íon molecular H2+ nos estados eletrônicos 1s[sigma] , 5f[pi], 5g[pi] , 6i[pi] , 6i[fi] e 7i[sigma]
This work presents the rovibrational spectroscopic constants of the molecu- lar ion H+ 2 in the eletronic states 1sσ, 5fπ, 5gπ, 6iπ, 6iφ and 7iσ. The H+ 2 eletronic energies were obtained from solution of Hamilton-Jacobi equation. The calculated energies were fitted using the extended Rydberg functions and polynomials in B
Publicado em: 2008
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5. High resolution zero degree electron spectroscopy of argon ions through carbon foil
Electrons emitted from high Rydberg states formed by penetration of 2.0 MeV/u Ar6, 13, 14, 15+ ions through C-foil targets of various thicknesses (4.0 - 20 µg/cm²) have been measured with high resolution utilizing zero-degree electron spectroscopy. Intense series of Coster-Kronig peaks due to Ar14+ 1s²2p(²P3/2,1/2)nl - 1s²2s(²S1/2)epsilonl' and Ar13+ 1
Brazilian Journal of Physics. Publicado em: 2006-06
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6. Processos binários em átomos de Rydberg / Binary process in Rydberg atoms
This dissertation seeks to address some of the characteristics of collisional processes in ultracold Rydberg atoms. With a Maqneto-Optical Trap (MOT), we trapped a sample of 85Rb, an alkaline metal element, in a region of about lmm at a temperature of a few hundreds of ?K, known in the literature as the "ultracold" regime. The 85Rb atoms are then excited to
Publicado em: 2006
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7. IMPLANTAÇÃO DA ESPECTROSCOPIA DE IMPACTO DE ELETRONS DE LIMIARES
Molecular studies using near threshold excitation electron impact allow to investigating several states such as weakly-bound Rydberg states of high angular momentum. Threshold electron studies also are useful to determine lifetimes of autoionising states by measuring the apparent shifts in the energy caused by postcollision interaction (PCI) between the ejec
Publicado em: 2006
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8. Orbital picture in molecular inner-shell excited states of Rydberg-valence mixed character
The core-to-sigma* excited state is repulsive for the bond elongation; on the other hand, the core ionized state and the core-to-pi* state are bound and the core-to-Rydberg states are almost parallel to the potential energy curve of the core ionized state. Thus, the core-electron excitation to the unoccupied sigma* orbital can be mixed with the one-electron
Brazilian Journal of Physics. Publicado em: 2005-12
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9. Logic gates using high Rydberg states
Connected logic gates can be operated on the levels of one molecule by making use of the special properties of high Rydberg states. Explicit experimental results for the NO molecule are provided as an example. A number of other options, including that of several gates concatenated so as to operate as a full adder, are discussed. Specific properties of h
The National Academy of Sciences.
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10. Discrete wave mechanics: The hydrogen atom
The quantum mechanical problem of the hydrogen atom is treated by use of a finite difference equation in place of Schrödinger's differential equation. The exact solution leads to a wave vector energy expression that is readily converted to the Bohr-Rydberg formula. (The calculations here reported are limited to spherically symmetric states.) The wave vector