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Träfflista för sökning "WFRF:(Revel A.) srt2:(2018)"

Sökning: WFRF:(Revel A.) > (2018)

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1.
  • Revel, A., et al. (författare)
  • Strong Neutron Pairing in core+4n Nuclei
  • 2018
  • Ingår i: Physical Review Letters. - 1079-7114 .- 0031-9007. ; 120:15
  • Tidskriftsartikel (refereegranskat)abstract
    • The emission of neutron pairs from the neutron-rich N=12 isotones C18 and O20 has been studied by high-energy nucleon knockout from N19 and O21 secondary beams, populating unbound states of the two isotones up to 15 MeV above their two-neutron emission thresholds. The analysis of triple fragment-n-n correlations shows that the decay N19(-1p)C18∗→C16+n+n is clearly dominated by direct pair emission. The two-neutron correlation strength, the largest ever observed, suggests the predominance of a C14 core surrounded by four valence neutrons arranged in strongly correlated pairs. On the other hand, a significant competition of a sequential branch is found in the decay O21(-1n)O20∗→O18+n+n, attributed to its formation through the knockout of a deeply bound neutron that breaks the O16 core and reduces the number of pairs.
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2.
  • Dalstein, Laetitia, et al. (författare)
  • Nonlinear optical response of a gold surface in the visible range : A study by two-color sum-frequency generation spectroscopy. I. Experimental determination
  • 2018
  • Ingår i: Journal of Chemical Physics. - : American Institute of Physics (AIP). - 0021-9606 .- 1089-7690. ; 148:13
  • Tidskriftsartikel (refereegranskat)abstract
    • We experimentally determine the effective nonlinear second-order susceptibility of gold over the visible spectral range. To reach that goal, we probe by vibrational two-color sum-frequency generation spectroscopy the methyl stretching region of a dodecanethiol self-assembled monolayer adsorbed on a gold film. The sum-frequency generation spectra show a remarkable shape reversal when the visible probe wavelength is tuned from 435 to 705 nm. After correcting from Fresnel effects, the methyl stretching vibrations serve as an internal reference, allowing to extract the dispersion of the absolute phase and relative amplitude of the effective nonlinear optical response of gold in the visible range.
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