Bulg. J. Phys. vol.41 no.1 (2014), pp. 010-023

New Low-Lying Excited 0+ States in 160Dy Nucleus

J. Adam1, D.D. Bogachenko2, O.K. Egorov2, V.P. Garistov1,3, A.I. Georgieva3, T.A. Islamov1, V.V. Kolesnikov2, V.I. Silaev2, A.A. Solnyshkin1
1Joint Institute for Nuclear Research, Dubna, Russia
2Institute of Theoretical and Experimental Physics, Moscow, Russia
3Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia, Bulgaria
Abstract. We report our results of the experimental search for new low-lying excited 0+ states in the 160Dy nucleus. The energy interval in which they should be observed was theoretically predicted by the parabolic energy distribution of 0+ states in the space of the monopole bosons, that are built from fermion pairs, as well as in the framework of the interacting vector bosons model (IVBM). In the experiment, a new more sensitive technique is used for measuring emulsion spectrograms of internal conversion electrons (ICE) using the Automated Scanning Microscope MAS-1. In the region of the theoretically predicted energies, new E0 transitions and excited 0+-states are observed in the spectrum of the 160Dy nucleus.

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