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Atomic Physics papers — page 2

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UV and X-ray Spectral Lines of FeXXIII Ion for Plasma Diagnostics
We have calculated X-ray and UV spectra of Be-like Fe (FeXXIII) ion in collisional-radiative model including all fine-structure transitions among the 2s2, 2s2p, 2p2, 2snl, and 2pnl levels where n=3…
Izumi Murakami, Takako KatoMay 15, 1996
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Problems with Standard Semiclassical Stark Broadening Theory
In this work we study in detail the NeVII 2s3p-2s3s singlet line, which was also the object of a recent experiment. The standard perturbative impact theory predictions are tested against a fully…
S. AlexiouMay 10, 1996
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Frequency Separation for Relaxation Problems
The modern era in spectral line broadening began with the understanding that the slow(quasistatic) ion and fast(impact) electron perturbers could be treated separately. The problem remained of…
S. AlexiouMay 10, 1996
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Ionization of the hydrogen atom in strong magnetic fields: beyond the adiabatic approximation
High magnetic fields in neutron stars, B ~ 1011 - 1013 G, substantially modify the properties of atoms and their interaction with radiation. In particular, the photoionization cross section…
A. Y. Potekhin, G. G. Pavlov, J. VenturaMay 5, 1996
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Right-unitary transformation theory and applications
We develop a new transformation theory in quantum physics, where the transformation operators, defined in the infinite dimensional Hilbert space, have right-unitary inverses only. Through several…
Zhong TangApr 30, 1996
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Interaction of a slow monopole with a hydrogen atom
The electric dipole moment of the hydrogen-like atom induced by a monopole moving outside the electron shell is calculated. The correction to the energy of the ground state of the hydrogen atom due…
Ya. M. ShnirApr 29, 1996
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Electromagnetic modes of Maxwell fisheye lens
We provide an analysis of the radial structure of TE and TM modes of the Maxwell fisheye lens, by means of Maxwell equations as applied to the fisheye case. Choosing a lens of size R = 1 cm, we plot…
H. C. Rosu, M. ReyesApr 25, 1996
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Limits on the monopole magnetic field from measurements of the electric dipole moments of atoms, molecules and the neutron
A radial magnetic field can induce a time invariance violating electric dipole moment (EDM) in quantum systems. The EDMs of the Tl, Cs, Xe and Hg atoms and the neutron that are produced by such a…
V. V. Flambaum, D. W. MurrayApr 22, 1996
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Evanescent wave diffraction of multi-level atoms
Diffraction of multi-level atoms by an evanescent wave reflective diffraction grating is modeled by numerically solving the time-dependent Schrödinger equation. We are able to explain the diffraction…
D. Gordon, C. M. SavageApr 19, 1996
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Atomic Data for Permitted Resonance Lines of Atoms and Ions from H to Si, and S, Ar, Ca and Fe
We list vacuum wavelengths, energy levels, statistical weights, transition probabilities and oscillator strengths for permitted resonance spectral lines of all ions of 18 astrophysically important…
D. A. Verner, E. M. Verner, G. J. FerlandApr 10, 1996
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An Atom Laser Based on Raman Transitions
In this paper we present an atom laser scheme using a Raman transition for the output coupling of atoms. A beam of thermal atoms (bosons) in a metastable atomic state |1 > are pumped into a…
G. M. Moy, J. J. Hope, C. M. SavageApr 4, 1996
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Hall-Effect for Neutral Atoms
It is shown that polarizable neutral systems can drift in crossed magnetic and electric fileds. The drift velocity is perpendicular to both fields, but contrary to the drif t velocity of a charged…
A. P. Kasantsev, A. M. Dykhne, V. L. PokrovskyApr 4, 1996
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Decoherence in Ion Trap Quantum Computers
The intrinsic decoherence from vibrational coupling of the ions in the Cirac-Zoller quantum computer [Phys. Rev. Lett. 74, 4091 (1995)] is considered. Starting from a state in which the…
Anupam GargMar 29, 1996
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Some remarks on the two-electron atom
New, approximate, two-electron wavefunctions are introduced for the two-electron atoms (cations), which account remarkably well for the ground-state energies and the lowest-excxited states (where…
M. ApostolMar 25, 1996
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TM-Surface Waves along the Boundary between two Nonlinear Anisotropic Dielectrics
It is shown that the Maxwell's equations for surface electromagnetic TM-waves, propagating along the plane boundary between two nonlinear dielectrics with arbitrary diagonal tensor of dielectric…
Yu. P. Rybakov, B. SahaMar 22, 1996
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Giant Coulomb broadening and Raman lasing on ionic transitions
CW generation of anti-Stokes Raman laser on a number of blue-green argon-ion lines (4p-4s, 4p-3d) has been demonstrated with optical pumping from metastable levels 3d'2G, 3d4F. It is found,…
A. A. Apolonsky, S. A. Babin, A. I. Chernykh et al.Mar 22, 1996
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Density Matrix Functional Calculations for Matter in Strong Magnetic Fields: I. Atomic Properties
We report on a numerical study of the density matrix functional introduced by Lieb, Solovej and Yngvason for the investigation of heavy atoms in high magnetic fields. This functional describes …
Kristinn Johnsen, Jakob YngvasonMar 21, 1996
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Interaction of Charged 3D Soliton with Coulomb Center
The Einstein - de Broglie particle-soliton concept is applied to simulate stationary states of an electron in a hydrogen atom. According to this concept, the electron is described by the localized…
Yu. P. Rybakov, B. SahaMar 21, 1996
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Direct Probing of Quantum Phase Space by Photon Counting
We propose a very simple experimental setup to measure, via photon counting, the overlap of the Wigner functions characterizing two single mode light beams. We show that this scheme can be applied to…
Konrad Banaszek, Krzysztof WodkiewiczMar 19, 1996
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Quantum Reservoir Engineering
We show how to design different couplings between a single ion trapped in a harmonic potential and an environment. This will provide the basis for the experimental study of the process of decoherence…
J. F. Poyatos, J. I. Cirac, P. ZollerMar 15, 1996
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Ionization of hydrogen and hydrogenic ions by antiprotons
Presented here is a description of the ionization of hydrogen and hydrogenic ions by antiproton-impact, based on very large scale numerical solutions of the time-dependent Schrödinger equation in…
D. R. Schultz, P. S. Krstic, C. O. Reinhold et al.Mar 4, 1996
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Stimulated Enhancement of Cross-Section by a Bose-Einstein Condensate
This paper examines the feasibility of constructing an experiment which detects the atomic stimulation of a photon emission process. A beam of atoms (bosons) in an excited state is passed over an…
J. J. Hope, C. M. SavageFeb 27, 1996
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Prospects for Parity Non-conservation Experiments with Highly Charged Heavy Ions
We discuss the prospects for parity non-conservation experiments with highly charged heavy ions. Energy levels and parity mixing for heavy ions with two to five electrons are calculated. We…
M. Maul, A. Schäfer, W. Greiner et al.Feb 23, 1996
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Atomic Data and Databases on the Internet: Entering 1996
In this report the current situation with availability and management of atomic data on the Internet is reviewed.
Yu. V. RalchenkoJan 23, 1996
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Dynamics, correlations and phases of the micromaser
The micromaser possesses a variety of dynamical phase transitions parametrized by the flux of atoms and the time-of-flight of the atom within the cavity. We discuss how these phases may be revealed…
Per Elmfors, Benny Lautrup, Bo-Sture SkagerstamJan 21, 1996
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