Low-energy dipole modes of excitation below the neutron separation energy

Journal Article

The nuclear resonance fluorescence experiments have been performed at the High Intensity Gamma Source (HIγS) on 138Ba nuclei using four 60% efficient HPGe detectors. Excitation energies, spin, parities, and decay branching ratios were measured for the low-energy dipole modes of excitations. Experimental results on the parity measurement below the neutron separation energy shows that all dipole states in this energy region exhibit E1 excitation. These results are consistent with theoretical prediction of the collective isoscalar nature of this low-energy mode of excitation. © 2006 American Institute of Physics.

Full Text

Duke Authors

Cited Authors

  • Tonchev, AP; Angell, C; Boswell, M; Howell, CR; Karwowski, HJ; Kelley, JH; Tornow, W; Tsoneva, N

Published Date

  • March 13, 2006

Published In

Volume / Issue

  • 819 /

Start / End Page

  • 350 - 354

Electronic International Standard Serial Number (EISSN)

  • 1551-7616

International Standard Serial Number (ISSN)

  • 0094-243X

Digital Object Identifier (DOI)

  • 10.1063/1.2187883

Citation Source

  • Scopus