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  • 2000-2004  (7)
  • 1985-1989
  • 1960-1964
  • 1890-1899
  • 2003  (3)
  • 2001  (4)
  • PACS. 32.70.Cs Oscillator strengths, lifetimes, transition moments – 42.62.Fi Laser spectroscopy  (4)
  • PACS. 32.80.Pj Optical cooling of atoms; trapping – 42.50.Vk Mechanical effects of light on atoms, molecules, electrons, and ions  (3)
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  • 2000-2004  (7)
  • 1985-1989
  • 1960-1964
  • 1890-1899
Year
  • 2003  (3)
  • 2001  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    Lifetime measurements in Tm I, Tm II, and Tm III by time-resolved laser spectroscopy (2003)
    Springer
    The European physical journal 23 (2003), S. 323-326 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 32.70.Cs Oscillator strengths, lifetimes, transition moments – 42.62.Fi Laser spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Natural radiative lifetimes of eight levels in Tm I ( 4f 135d6p and 4f 125d6s 2 configurations), two levels in Tm II ( 4f 125d6s configuration) and three levels in Tm III (4f 125d configuration) have been measured by using time-resolved laser spectroscopy. Free thulium atoms, as well as singly and doubly ionized ions, were obtained in a laser-induced thulium plasma and the investigated states were selectively populated by a single-step excitation process with a tunable narrow-band laser pulse.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjd/e2003-00055-3
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Atom optics with rotating Bose-Einstein condensates (2003)
    Springer
    The European physical journal 22 (2003), S. 385-391 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 32.80.Pj Optical cooling of atoms; trapping – 42.50.Vk Mechanical effects of light on atoms, molecules, electrons, and ions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The atom optics of Bose-Einstein condensates containing a vortex of circulation one is discussed. We first analyze in detail the reflection of such a condensate falling on an atomic mirror. In a second part, we consider a rotating condensate in the case of attractive interactions. We show that for sufficiently large nonlinearity the rotational symmetry of the rotating condensate is broken.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjd/e2003-00044-6
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Radiative lifetimes in Ce I and Ce II (2003)
    Springer
    The European physical journal 23 (2003), S. 233-236 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 32.70.Cs Oscillator strengths, lifetimes, transition moments – 42.62.Fi Laser spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: New radiative lifetime measurements based on time-resolved laser-induced fluorescence techniques are reported for 18 even-parity levels belonging to the 4f5d26p and 4f 25d 2 configurations of Ce I and 6 even-parity levels belonging to the 5d26s, 4f5d6p, and 4f6s6p configurations of Ce II. Free neutral and singly ionized cerium atoms were produced by laser ablation. The Ce I and Ce II levels range in energy from 26 545 to 29 102 cm-1, and 42 573 to 48 152 cm-1, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjd/e2003-00054-4
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Lifetime measurements in Gd II and Gd III using time-resolved laser spectroscopy (2001)
    Springer
    The European physical journal 13 (2001), S. 301-304 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 32.70.Cs Oscillator strengths, lifetimes, transition moments – 42.62.Fi Laser spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Natural radiative lifetimes of 20 levels (energy range between 29 000-35 000 cm-1) in Gd II and 5 levels (energy range between 43 000-49 000 cm-1) in Gd III have been measured using time-resolved laser-induced fluorescence in a laser-produced plasma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530170245
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Single-beam optical bottle for cold atoms using a conical lens (2001)
    Springer
    The European physical journal 14 (2001), S. 373-376 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 32.80.Pj Optical cooling of atoms; trapping – 42.50.Vk Mechanical effects of light on atoms, molecules, electrons, and ions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We report a new method to generate an optical dipole potential with a null intensity region surrounded in all directions by light walls. This is achieved with a simple scheme based on a conical lens. Applications to optical trapping of neutral atoms are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530170205
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    A continuous cold atomic beam from a magneto-optical trap (2001)
    Springer
    The European physical journal 15 (2001), S. 245-249 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 32.80.Pj Optical cooling of atoms; trapping – 42.50.Vk Mechanical effects of light on atoms, molecules, electrons, and ions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We have developed and characterized a new method to produce a continuous beam of cold atoms from a standard vapour-cell magneto-optical trap (MOT). The experimental apparatus is very simple. Using a single laser beam it is possible to hollow out in the source MOT a direction of unbalanced radiation pressure along which cold atoms can be accelerated out of the trap. The transverse cooling process that takes place during the extraction reduces the beam divergence. The atomic beam is used to load a magneto-optical trap operating in an ultra-high vacuum environment. At a vapour pressure of 10-8mbar in the loading cell, we have produced a continuous flux of 7×107atoms/s at the recapture cell with a mean velocity of 14 m/s. A comparison of this method with a pulsed transfer scheme is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530170172
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Experimental and theoretical lifetimes in Yb III (2001)
    Springer
    The European physical journal 15 (2001), S. 301-305 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 32.70.Cs Oscillator strengths, lifetimes, transition moments – 42.62.Fi Laser spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Lifetimes of three levels belonging to the configuration 4f 135d with J = 1 in Yb III have been measured for the first time using the time-resolved laser-induced fluorescence method. Experimental transition probabilities have been deduced for the transitions between the levels studied and the ground state. The comparison of the experimental lifetimes with theoretical data, deduced within the relativistic Hartree-Fock (HFR) approach, underlines the dramatic importance of an adequate consideration of core-polarization effects in the theoretical model and the sensitivity of one of the lifetime values to small correlation effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530170144
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    Paper (German National Licenses)
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