Back and forth between Rydberg atoms and ultracold plasmas
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چکیده
منابع مشابه
Title of dissertation : Three - Body Recombination and Rydberg Atoms in Ultracold Plasmas
Title of dissertation: Three-Body Recombination and Rydberg Atoms in Ultracold Plasmas Robert S. Fletcher, Doctor of Philosophy, 2008 Dissertation directed by: Professor Steven Rolston Department of Physics Ultracold neutral plasmas, created by photoionizing samples of laser-cooled atoms, have well-controlled initial density and temperature parameters. With initial particle peak densities of ∼ ...
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Ultracold Rb atoms were used to demonstrate nondegenerate four-wave mixing through a Rydberg state. Continuous 5S-5P-nD two-photon excitation to the Rydberg state was combined with an nD-6P tuned laser in a phase-matched geometry. The angular dependence, spatial profile, and dependence on detuning were investigated, showing good agreement with theory. Under optimum conditions 50% of the radiati...
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We have observed the spontaneous evolution of a dense sample of Rydberg atoms into an ultracold plasma, in spite of the fact that each of the atoms may initially be bound by up to 100 cm(-1). When the atoms are initially bound by 70 cm(-1), this evolution occurs when most of the atoms are translationally cold, <1 mK, but a small fraction, approximately 1%, is at room temperature. Ionizing colli...
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We study the formation of Rydberg atoms in expanding plasmas at temperatures of 1-1000 K and densities from 10(5)-10(10) cm(-3). Up to 20% of the initially free charges recombine in about 100 micros, and the binding energy of the Rydberg atoms approximately equals the increase in the kinetic energy of the remaining free electrons. Three-body recombination is expected to dominate in this regime,...
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This paper is concerned with bisimulation relations which do not only require related agents to simulate each others behavior in the direction of the arrows, but also to simulate each other when going back in history. First it is demonstrated that the back and forth variant of strong bisimulation leads to the same equivalence as the ordinary notion of strong bisimulation. Then it is shown that ...
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ژورنال
عنوان ژورنال: Journal of the Optical Society of America B
سال: 2003
ISSN: 0740-3224,1520-8540
DOI: 10.1364/josab.20.001091