Počet záznamů: 1

Low-lying levels of Re-188 nucleus from gamma gamma-coincidence measurements

  1. 1.
    0351121 - UJF-V 2011 RIV NL eng J - Článek v odborném periodiku
    Balodis, M. - Tomandl, Ivo - Bondarenko, V. - Simonova, L. - Krasta, T. - Berzins, J.
    Low-lying levels of Re-188 nucleus from gamma gamma-coincidence measurements.
    Nuclear Physics. A. Roč. 847, 3-4 (2010), s. 121-148 ISSN 0375-9474
    Grant CEP: GA ČR GA202/03/0891
    Výzkumný záměr: CEZ:AV0Z10480505
    Klíčová slova: NUCLEAR REACTION Re-187(n, gamma) * E = thermal * measured E-gamma
    Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
    Impakt faktor: 1.986, rok: 2010

    Low-high and low-low energy gamma gamma-coincidences, following the Re-187(n, gamma) Re-188 reaction with thermal neutrons, have been measured. Spectra have been recorded in the energy range from 50 to 2600 keV, and from 4500 to 6500 keV. The earlier known Re-188 level scheme is corrected and extended up to similar to 800 keV excitation energy and 62 levels by including 20 new levels. For 11 levels, the earlier interpretation has been changed. The complete level scheme is presented for up to similar to 400 keV energy and spins <= 5. Core plus two-quasiparticles model calculations have been performed. Some Re-188 two-quasiparticle states display features indicating the nuclear shape phase transition from axial-deformation to gamma-soft form.
    Trvalý link: http://hdl.handle.net/11104/0190941