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Träfflista för sökning "WFRF:(Rubel F.) srt2:(1993-1994)"

Sökning: WFRF:(Rubel F.) > (1993-1994)

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1.
  • Cederwall, Bo, et al. (författare)
  • NEW OBLATE BAND IN HG-196 WITH QUENCHED M1 STRENGTH
  • 1993
  • Ingår i: Physical Review C. Nuclear Physics. - 0556-2813 .- 1089-490X. ; 47:6, s. R2443-R2446
  • Tidskriftsartikel (refereegranskat)abstract
    • High-spin states in the nucleUs Hg-196 were populated in the reaction (Os(Be,5n))-Os-192 at a beam energy of 65 MeV. A regular rotational-like DELTAI = 1 band has been observed up to an excitation energy of E* almost-equal-to 8.7 MeV and spin I almost-equal-to 30hBAR. This is the second observation of a band of this character in a mercury isotope. The experimental results are compared with mean field calculations and semiclassical estimates based on the Donau-Frauendorf formalism. The mercury bands show significantly lower B(M1)/B(E2) branching ratios as compared with similar bands in light lead nuclei. This difference may be more readily explained by a difference in single-particle structure rather than by large differences in deformation between the lead and mercury configurations.
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2.
  • Rubel, M., et al. (författare)
  • Behavior of SiC-Al coatings upon high dose irradiation with deuterium and helium ions
  • 1994
  • Ingår i: Surface & Coatings Technology. - : Elsevier BV. - 0257-8972 .- 1879-3347. ; 64:3, s. 205-211
  • Tidskriftsartikel (refereegranskat)abstract
    • Al-SiC coatings obtained by vacuum plasma spraying co-deposition are considered as a new class of plasma-facing materials (PFMs) for fusion devices. The technical requirements for PFMs are stringent, since they have to withstand severe operation conditions, including bombardment by high fluxes of particles escaping the plasma. A number of Al-SiC coatings (containing 20 or 50wt.% SiC) deposited on Cu, stainless steel or graphite substrates were irradiated under laboratory conditions with high doses of deuterium or He ions. The surface properties of the materials were characterized before and after irradiation using several analytical techniques (Rutherford backscattering, nuclear reaction analysis, secondary ion mass spectrometry, Auger electron spectroscopy, energy-dispersive spectroscopy, microscopic methods and laser profilometry). Exposure to low-energy deuterium ions or deuterium plasma resulted in the implantation of 7-9 × 1016 D cm-2 in the near-surface layer. The initial steps of blister formation were also observed. Changes in the surface structure were noted following irradiation with 5He+ ions (1.7-2 MeV). Damage in the surface layer of the materials was dependent on the ion flux.
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