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Low-spin mixed particle-hole structures in W-185

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    0030784 - ÚJF 2006 RIV NL eng J - Journal Article
    Bondarenko, V. - Honzátko, Jaroslav - Tomandl, Ivo - Egidy, T. von - Wirth, HF. - Sukhovoj, A. M. - Malov, L.A. - Simonova, L. I. - Berzinš, J. - Hertenberger, R. - Eisermann, Y. - Graw, G. - Alexa, P.
    Low-spin mixed particle-hole structures in W-185.
    [Nízkospinová směs částicovo děravých struktur v 185W.]
    Nuclear Physics. A. Roč. 762, - (2005), s. 167-215. ISSN 0375-9474. E-ISSN 1873-1554
    R&D Projects: GA ČR GA202/03/0891; GA ČR(CZ) GA202/99/D087
    Institutional research plan: CEZ:AV0Z10480505
    Keywords : nuklear reactions * measured prompt and delayed E gamma * gamma gamma-coincidences
    Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
    Impact factor: 1.950, year: 2005

    The level structure of W-185 has been studied using the prompt and delayed gamma-gamma coincidences from thermal neutron capture in W-184 accompanied with the one-nucleon transfer reactions (d, p) and (d, t) with polarized beams. From these data and those of previous studies a total of 183 levels has been established for energies below 3 MeV. Many of these states have been grouped into rotational bands built on 28 intrinsic states of quasiparticle and quasi particle-plus-phonon character. Although the DWBA analysis permitted definite spin-parity assignments for most of states a large number of particle transitions have,anomalous' angular and asymmetry shapes with respect to the DWBA which indicate an influence of strong mixing between particle and hole states.

    Struktura úrovní jádra 185W byla studována metodou promptní a zpožděné gama-gama koincidence po záchytu termálního neutronu a reakcí s jednonukleonovým přenosem (d,p) a (d,t) s využitím polarizovaného svazku deuteronu. Většina z pozorovaných hladin byla seskupena do rotačních pásů vybudovaných nad 28 vnitřními stavy kvazičásticového nebo kvazicasticoveho plus fononového charekteru. Pozorované stavy pod 2 MeV byly porovnány s předpovědí QPM modelu (Quasiparticle-Phonon Model).
    Permanent Link: http://hdl.handle.net/11104/0131609

     
     
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