Investigation of vibrational levels in226Ra by coulomb excitation and by the226Ra(d,pnγ) reaction

Abstract Vibrational bands in226Ra were studied by Coulomb excitation and by the226Ra(d,pnγ) reaction. The first-excitedK π = 0+ and 1− bands with known band heads at 825 and 1049 keV, respectively, were extended up to the 8+ and 7− levels. A new 2+ level at 1110 keV and the known 2+ level at 1156 keV were observed following Coulomb excitation and interpreted asγ vibration and possible member of a second-exitedK π = 0+ band, respectively. TheE1 andE2 branching ratios from these vibrational bands to the ground and first-excited 0− band are explained within the rotational model including band mixings. No evidence was found for a 0+ level at 650 keV proposed earlier.