Comprehensive studies of low-spin collective excitations in 94Mo

C. Fransen, N. Pietralla, Z. Ammar, D. Bandyopadhyay, N. Boukharouba, P. Von Brentano, A. Dewald, J. Gableske, A. Gade, J. Jolie, U. Kneissl, S. R. Lesher, A. F. Lisetskiy, M. T. McEllistrem, M. Merrick, H. H. Pitz, N. Warr, V. Werner, S. W. Yates

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107 Scopus citations


Excited low-spin states in 94Mo have been studied extensively with a combination of γ-ray spectroscopic techniques. We have performed photon scattering experiments, γγ coincidence measurements following the β+ decay of 94Tcm, in-beam γγ coincidence studies with the reaction 91Zr(α,n)94Mo, and 94Mo(n,n′ γ) measurements. These experiments yielded detailed information about the low-spin level scheme of 94Mo. From measured lifetimes, branching ratios, and multipole mixing ratios, many absolute transition strengths were determined. These data permitted the interpretation of several low-spin states in terms of collective excitations, that are not fully symmetric with respect to the proton-neutron degree of freedom, the so-called mixed-symmetry (MS) states: The one-phonon 2+ MS state and three members of an expected multiplet of two-phonon MS states were identified from absolute M l and E2 transition strengths. The data also enable us to identify several proton-neutron-symmetric multiphonon states.

Original languageEnglish
Article number024307
Pages (from-to)243071-2430719
Number of pages2187649
JournalPhysical Review C - Nuclear Physics
Issue number2
StatePublished - Feb 1 2003

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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