Comprehensive studies of low-spin collective excitations in [Formula Presented]

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

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Excited low-spin states in [Formula Presented] have been studied extensively with a combination of [Formula Presented]-ray spectroscopic techniques. We have performed photon scattering experiments, [Formula Presented] coincidence measurements following the [Formula Presented] decay of [Formula Presented] in-beam [Formula Presented] coincidence studies with the reaction [Formula Presented] and [Formula Presented] measurements. These experiments yielded detailed information about the low-spin level scheme of [Formula Presented] 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 [Formula Presented] MS state and three members of an expected multiplet of two-phonon MS states were identified from absolute [Formula Presented] and [Formula Presented] transition strengths. The data also enable us to identify several proton-neutron-symmetric multiphonon states.

Original languageEnglish
Pages (from-to)19
Number of pages1
JournalPhysical Review C - Nuclear Physics
Issue number2
StatePublished - 2003

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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