Počet záznamů: 1

Magnetic moment of Ag-104(m) and the hyperfine magnetic field of Ag in Fe using nuclear magnetic resonance on oriented nuclei

  1. 1.
    0346454 - UJF-V 2011 RIV US eng J - Článek v odborném periodiku
    Golovko, V.V. - Kraev, I.S. - Phalet, T. - Delaure, B. - Beck, M. - Kozlov, V. Yu. - Coeck, S. - Wauters, F. - Herzog, P. - Tramm, C. - Zákoucký, Dalibor - Vénos, Drahoslav - Srnka, Dušan - Honusek, Milan - Koster, U. - Severijns, N.
    Magnetic moment of Ag-104(m) and the hyperfine magnetic field of Ag in Fe using nuclear magnetic resonance on oriented nuclei.
    Physical Review. C. Roč. 81, č. 5 (2010), 054323/1-054323/11 ISSN 0556-2813
    Grant CEP: GA MŠk 1P04LA211; GA MŠk LA08015
    Výzkumný záměr: CEZ:AV0Z10480505
    Klíčová slova: RELAXATION ATTENUATION COEFFICIENTS * ORIENTATION EXPERIMENTS * QUADRUPOLE-MOMENTS
    Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
    Impakt faktor: 3.416, rok: 2010

    Nuclear magnetic resonance (NMR/ON) measurements with beta- and gamma-ray detection have been performed on oriented Ag-104(g,m) nuclei with the NICOLE He-3-He-4 dilution refrigerator setup at ISOLDE/CERN. For Ag-104(g) (I-pi = 5(+)) the gamma-NMR/ON resonance signal was found at nu = 266.70(5) MHz. Combining this result with the known magnetic moment for this isotope, the magnetic hyperfine field of Ag impurities in an Fe host at low temperature (< 1 K) is found to be vertical bar B-hf(AgFe)vertical bar = 44.709(35) T. A detailed analysis of other relevant data available in the literature yields three more values for this hyperfine field. Averaging all four values yields a new and precise value for the hyperfine field of Ag in Fe; that is, vertical bar B-hf(AgFe)vertical bar = 44.692(30) T. For Ag-104(m) (I-pi = 2(+)), the anisotropy of the beta particles provided the NMR/ON resonance signal at nu = 627.7(4) MHz.
    Trvalý link: http://hdl.handle.net/11104/0187478