Počet záznamů: 1

Improved characteristics of the 22.5 keV (M1+E2) nuclear transition in (149)Sm

  1. 1.
    0365548 - UJF-V 2012 RIV DE eng J - Článek v odborném periodiku
    Inoyatov, A. K. - Filosofov, D. V. - Gorozhankin, VM. - Kovalík, Alojz - Adam, Jiří - Perevoshchikov, L. L. - Ryšavý, Miloš
    Improved characteristics of the 22.5 keV (M1+E2) nuclear transition in (149)Sm.
    European Physical Journal A. Roč. 47, č. 5 (2011), 64/1-64/5 ISSN 1434-6001
    Grant CEP: GA MŠk LC07050
    Výzkumný záměr: CEZ:AV0Z10480505
    Klíčová slova: INTERNAL-CONVERSION COEFFICIENTS * DECAY
    Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
    Impakt faktor: 2.190, rok: 2011

    The gamma ray and conversion electron spectra of the 22.5 keV M1 + E2 nuclear transition depopulating the first excited level 5/2(-) in (149)Sm were investigated in detail. A substantially improved value of 22500.2 +/- 0.8 eV for the transition energy was determined that opens a possibility to establish an electron energy standard for the keV region based on the conversion electron lines of this transition. The E2 admixture parameter vertical bar delta(E2/M1)vertical bar = 0.0784 +/- 0.0009 and the nuclear structure parameter lambda = -2 +/- 10 were derived. The vertical bar delta(E2/M1)vertical bar and lambda parameters were also obtained for all available experimental data and their mutual combination.
    Trvalý link: http://hdl.handle.net/11104/0200769