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Träfflista för sökning "WFRF:(NORIN E) srt2:(1995-1999)"

Sökning: WFRF:(NORIN E) > (1995-1999)

  • Resultat 1-9 av 9
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  • BENBADIS, L, et al. (författare)
  • WORKING GROUP-VII - FOOD-PRODUCTS
  • 1995
  • Ingår i: MICROBIAL ECOLOGY IN HEALTH AND DISEASE. - 0891-060X. ; 8, s. S43-S44
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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  • Li, Z. S, et al. (författare)
  • Radiative properties of neutral germanium obtained from excited-state lifetime and branching-ratio measurements and comparison with theoretical calculations
  • 1999
  • Ingår i: Physical Review A (Atomic, Molecular and Optical Physics). - 1050-2947. ; 60:1, s. 198-208
  • Tidskriftsartikel (refereegranskat)abstract
    • Using time-resolved UV laser-induced fluorescence from a laser-produced plasma, natural radiative lifetimes have been measured for 21 levels of Ge I belonging to the odd-parity 4p4d, 4p5d, and 4p6s configurations. Stimulated Brillouin scattering in water has allowed us to compress Nd:YAG laser pulses pumping a dye laser (where YAG denotes yttrium aluminum garnet), thus yielding 1-ns tunable laser pulses to enable accurate measurements of short lifetimes. Branching ratios of Ge I have been measured by inductively coupled plasma emission spectrometry, the intensity calibration being performed by means of Ar lines emitted by a hollow-cathode lamp. The experimental lifetimes and branching ratios have been combined in order to provide a set of accurate transition probabilities for the 4p-5s and 4p-4d transitions. A relativistic Hartree-Fock; calculation, taking configuration-interaction and polarization effects into account, has been combined with a least-squares optimization procedure of the Slater and spin-orbit integrals in order to test the ability of this approach to correctly predict radiative properties of the group-IV elements. Good agreement between experimental and theoretical transition probability values has been achieved for most of the transitions considered.
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  • Resultat 1-9 av 9

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