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Träfflista för sökning "WFRF:(Tsukada H) srt2:(2020-2024)"

Sökning: WFRF:(Tsukada H) > (2020-2024)

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1.
  • Abe, K., et al. (författare)
  • Neutron tagging following atmospheric neutrino events in a water Cherenkov detector
  • 2022
  • Ingår i: Journal of Instrumentation. - : Institute of Physics (IOP). - 1748-0221. ; 17:10
  • Tidskriftsartikel (refereegranskat)abstract
    • We present the development of neutron-tagging techniques in Super-Kamiokande IV using a neural network analysis. The detection efficiency of neutron capture on hydrogen is estimated to be 26%, with a mis-tag rate of 0.016 per neutrino event. The uncertainty of the tagging efficiency is estimated to be 9.0%. Measurement of the tagging efficiency with data from an Americium-Beryllium calibration agrees with this value within 10%. The tagging procedure was performed on 3,244.4 days of SK-IV atmospheric neutrino data, identifying 18,091 neutrons in 26,473 neutrino events. The fitted neutron capture lifetime was measured as 218 +/- 9 mu s.
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  • Yakushev, A., et al. (författare)
  • On the adsorption and reactivity of element 114, flerovium
  • 2022
  • Ingår i: Frontiers in Chemistry. - : Frontiers Media SA. - 2296-2646. ; 10
  • Tidskriftsartikel (refereegranskat)abstract
    • Flerovium (Fl, element 114) is the heaviest element chemically studied so far. To date, its interaction with gold was investigated in two gas-solid chromatography experiments, which reported two different types of interaction, however, each based on the level of a few registered atoms only. Whereas noble-gas-like properties were suggested from the first experiment, the second one pointed at a volatile-metal-like character. Here, we present further experimental data on adsorption studies of Fl on silicon oxide and gold surfaces, accounting for the inhomogeneous nature of the surface, as it was used in the experiment and analyzed as part of the reported studies. We confirm that Fl is highly volatile and the least reactive member of group 14. Our experimental observations suggest that Fl exhibits lower reactivity towards Au than the volatile metal Hg, but higher reactivity than the noble gas Rn.
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