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    Wyświetlanie 1-5 z 5
    Tytuł:
    INDRA: A 4π Detector for Nuclear Dynamics and Thermodynamics Studies
    Autorzy:
    Rivet, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402640.pdf
    Data publikacji:
    2015-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    25.70.Mn
    25.70.Pq
    24.60.Ky
    Opis:
    This paper reports on some topics presently studied by the INDRA collaboration in nuclear dynamics and thermodynamics. We shall show information on the density dependence of the symmetry term of the nuclear equation of state. A possible origin of multifragmentation and fragment formation will be demonstrated. Finally we report on an experiment aiming at determining the influence of isospin on the nucleus level density.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 5; 1552-1554
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    From Light to Heavy Nuclear Systems, Production and Decay of Fragments Studied with Powerful Arrays
    Autorzy:
    Casini, G.
    Morelli, L.
    Barlini, S.
    Piantelli, S.
    D'Agostino, M.
    Baiocco, G.
    Marchi, T.
    Abbondanno, U.
    Ademard, G.
    Appannababu, S.
    Bini, M.
    Bonnet, E.
    Borderie, B.
    Bougault, R.
    Bruno, M.
    Chbihi, A.
    Cinausero, M.
    Degerlier, M.
    Fabris, D.
    Frankland, J.
    Gelli, N.
    Gramegna, F.
    Gruyer, D.
    Gulminelli, F.
    Kordyasz, A.
    Kozik, T.
    Kravchuk, V.
    Kulig, P.
    Le Neindre, N.
    Lopez, O.
    Maurenzig, P.
    Olmi, A.
    Pasquali, G.
    Pârlog, M.
    Poggi, G.
    Rivet, M.
    Rosato, E.
    Sosin, Z.
    Spadaccini, G.
    Stefanini, A.
    Twarog, T.
    Valdrè, S.
    Vient, E.
    Raduta, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402639.pdf
    Data publikacji:
    2015-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    25.70.Gh
    25.70.Pq
    25.70.Mn
    29.40.-n
    Opis:
    Reactions between heavy-ions at various energy regimes produce many nuclear fragments which can be populated in highly excited states. The study of these fragments, detected at the end of their particle decay, is important to investigate nuclear forces and structure effects. In recent years there have been many efforts to extend these studies towards the drip-lines, i.e. to systems far from the β-stability valley, by using accelerated radioactive beams. The development of such infrastructures is accompanied by the development of more powerful detectors and associated electronics, capable to identify ions with very different sizes and kinetic energies. Here we give two examples which show how advanced arrays can contribute to the studies on nuclear phenomena. The examples come from the European FAZIA collaboration and from recent campaigns with the GARFIELD apparatus, the latter in operation at the INFN Legnaro Laboratory (Italy) where the SPES RIB facility is under construction.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 5; 1548-1551
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fabrication and Transport Critical Current Densities of $MgB_2//Fe//Cu$ Multifilament Tapes without Any Intermediate Annealing
    Autorzy:
    Yucel, E.
    Terzioglu, C.
    Varilci, A.
    Gencer, A.
    Belenli, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/1489874.pdf
    Data publikacji:
    2012-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.70.Ad
    84.71.Mn
    74.62.-c
    74.25.Sv
    74.25.F-
    Opis:
    We have fabricated superconducting 6 and 7 filaments $MgB_2//Fe//Cu$ tapes by ex situ powder-in-tube method using Cu-sheath without any intermediate annealing. Properties of two different multicore $MgB_2//Fe//Cu$ tapes annealed at 900C for 2 h in high purity argon gas atmosphere were compared. The samples were characterized using scanning electron microscope, X-ray diffraction, electron dispersive spectroscopy, optical microscopy, critical transition temperature, transport critical current density, and magnetic measurements. Transport critical current densities of the 6 and 7 filaments tapes were found to be 450 A/cm^2 and 190 A/cm^2 at 20 K, respectively. From X-ray diffraction measurements, lattice parameters a and c were determined. From dc resistivity measurements, the connectivity between grains was investigated by using Rowell's connectivity analysis.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 3; 660-665
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Model Materials for Reactor Pressure Vessel
    Autorzy:
    Degmová, J.
    Debarberis, L.
    Kršjak, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/1535479.pdf
    Data publikacji:
    2010-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    28.41.Qb
    62.25.Mn
    75.50.Cc
    81.70.Bt
    81.70.Ex
    Opis:
    In this paper we report preliminary results from a study focused on investigation of the role of elements as Cr, Ni, Mn and Si in the radiation stability of reactor pressure vessel steels. Twelve model ferritic steels and eight model welds with basic composition derived from Russian VVER-1000 and Western PWR reactor pressure vessel materials were studied by magnetic Barkhausen noise and Charpy-V impact measurements. Comparison of these two model materials led to the conclusion that the ductile-brittle transition temperatures and Barkhausen noise RMS values of model steels are shifted to the lower values as those of model welds. The VVER-1000 as reference point is shifted to lower RMS values in comparison with model steels and model welds. The next stage of the assessment will involve the investigation of the radiation effect on the model steels with accumulated neutron fluence of $10^{19} n//cm^2$.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 5; 1054-1056
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Superconducting Devices for Power Engineering
    Autorzy:
    Janowski, T.
    Kondratowicz-Kucewicz, B.
    Wojtasiewicz, G.
    Kozak, S.
    Kozak, J.
    Majka, M.
    Jaroszyński, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1398596.pdf
    Data publikacji:
    2016-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    74.90.+n
    84.60.Ve
    84.70.+p
    84.71.-b
    84.71.Ba
    84.71.Mn
    85.25.-j
    85.25.Am
    85.25.Qc
    Opis:
    The paper presents the current state of research on superconducting devices for the electrical power system, i.e. transformers, fault-current limiters, and energy storages. In particular, it describes scientific achievements of the Laboratory of Superconducting Technologies of Electrotechnical Institute. The development of distributed and renewable energy sources, as well as the increasing number of receivers with low power factor will rise interest in superconducting fault-current limiters and superconducting transformers rated below 1 MVA. Previous studies were focused on the largest power transformers and highest current superconducting fault-current limiters. ReBCO coated conductors allow to build efficient superconducting AC devices. Superconducting tape of a layered structure (second generation HTS tape) enables the construction of transformer rated up to a few MVA without the usage of parallel conductors. Relatively high resistance of the tape in normal state allows to build fault-current limiters and fault-current limiting transformers. Superconducting transformers and superconducting fault-current limiters can help to increase connected power of distribution stations and thereby accelerate development of renewable energy sources.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 2; 537-544
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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