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Träfflista för sökning "WFRF:(Lunkenheimer P.) "

Search: WFRF:(Lunkenheimer P.)

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1.
  • Sillrén, Per, 1982, et al. (author)
  • Liquid 1-propanol studied by neutron scattering, near-infrared, and dielectric spectroscopy
  • 2014
  • In: Journal of Chemical Physics. - : AIP Publishing. - 1089-7690 .- 0021-9606. ; 140:12
  • Journal article (peer-reviewed)abstract
    • Liquid monohydroxy alcohols exhibit unusual dynamics related to their hydrogen bonding induced structures. The connection between structure and dynamics is studied for liquid 1-propanol using quasi-elastic neutron scattering, combining time-of-flight and neutron spin-echo techniques, with a focus on the dynamics at length scales corresponding to the main peak and the pre-peak of the structure factor. At the main peak, the structural relaxation times are probed. These correspond well to mechanical relaxation times calculated from literature data. At the pre-peak, corresponding to length scales related to H-bonded structures, the relaxation times are almost an order of magnitude longer. According to previous work [C. Gainaru, R. Meier, S. Schildmann, C. Lederle, W. Hiller, E. Rössler, and R. Böhmer, Phys. Rev. Lett.105, 258303 (2010)] this time scale difference is connected to the average size of H-bonded clusters. The relation between the relaxation times from neutron scattering and those determined from dielectric spectroscopy is discussed on the basis of broad-band permittivity data of 1-propanol. Moreover, in 1-propanol the dielectric relaxation strength as well as the near-infrared absorbance reveal anomalous behavior below ambient temperature. A corresponding feature could not be found in the polyalcohols propylene glycol and glycerol.
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2.
  • Sherman, A, et al. (author)
  • Dielectric properties of C-70-solvate crystals grown from a benzene solution
  • 1998
  • In: JOURNAL OF PHYSICAL CHEMISTRY B. - : AMER CHEMICAL SOC. ; 102:39
  • Other publication (other academic/artistic)abstract
    • C-70 crystals with size up to 3 x 3 x 0.2 mm were grown from benzene solution. The real and imaginary parts of the complex conductivity of this crystals were studied in the frequency range 20 Hz-1 MHz and the temperature range from 10 K to the room temper
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  • Result 1-4 of 4

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