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We present a new study of the low-lying states in 124Te nucleus by γ-ray spectroscopy following 124Iβ+/ε decay. The β radioactive sources were produced in the 124Te(p, n)124I reaction induced by 11 MeV protons, delivered by the Bucharest FN Tandem Accelerator. The γ-rays were measured in a low background area with three large volume HPGe detectors. A total number of 276 milion double coincidence events were recorded in a six-day run. Most of the gamma line intensities previously measured were confirmed with improved accuracy and several gamma lines were obtained for the first time. Our results, combined with those from a recent (n, γ) study are compared with the predictions of the E(5) critical point symmetry model and numerical IBA-1 model calculations at the critical point of the U(5)–O(6) phase transition. [ABSTRACT FROM AUTHOR]

The lifetimes of twelve low spin excited states in [SUP73]As, below 2 MeV excitation, have been measured with the DSA method in the 73Ge(p,n&gama;) reaction. The existing data (energy levels, electromagnetic moments, transition probabilities and branching ratios, one-nucleon transfer spectroscopic factors) are discussed in the frame of multi-shell interacting boson-fermion model calculations. A good agreement is obtained for a large number of levels. [ABSTRACT FROM AUTHOR]