Thermal-neutron capture gamma-rays from some rare-earth elements

Sklyarevskii, V.V.; Stepanov, E.P.; Obinyakov, B.

doi:10.1016/0891-3919(59)90140-3

Cited by 3 publications

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“…It is, therefore, of interest to determine the extent to which the Nilsson model can account for the low-lying level structure of t52Eu. Several measurements of neutron capture radiation applying scintillation, Ge(Li), diffraction crystal and conversion electron spectrometers have been reported [13][14][15][16][17][18][19][20][21][22][23][24][25]. Because of its transitional character, it is interesting to determine if these isomers and other lowlying levels can be identified as spherical or deformed states as suggested by Peker [1,2] several years ago.…”

Section: Introductionmentioning

confidence: 99%

Nuclear levels in152Eu

et al. 1978

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The transitional nucleus 152Eu has been studied using the (n, e), (n, 7), (n .... 7), (n, 77), (d,p), (d, t) and (p, d) reactions. The experiments have been performed at nine different laboratories. A model independent level scheme was established including 95 levels below 510 keV and nearly 900 transitions by combination of low energy transitions and reaction data. More than 20 additional levels result from gamma rays and/or charged particle reactions. The level scheme is interpreted in terms of the Nilsson model indicating that 152Eu is a deformed nucleus. Seven rotational bands and Nilsson configurations are established. An additional 27 rotational bands are tentatively or speculatively assugned. Gallagher-Moszkowski splittings are discussed. The neutron binding energy was determined as 6305.2 __ 0.5 keV. The energy of the 9.3h0-isomer is 45.599keV. The lifetimes of four levels were measured.Nuclear Reactions 15tEu(n, 7), E, =thermal and resonance; measured E.~, I~,E ..... I ..... 77 coinc., 77At coinc.; lSlEu(d,p), E=12MeV and 14MeV; a53Eu(d,t), E=12MeV; 153Eu(p,d), E=18MeV; deduced level scheme of 152Eu, J, ~, T1/2, cc, Nilsson configurations. Magnetic electron spectrometer, curved crystal spectrometer, Ge(Li) and Si(Li) detectors, magnetic spectrographs. Enriched targets.

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