Low-lying Collective States in {sup 136}Ba

Journal Article · Wed Jan 28 00:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3087022· OSTI ID:21255417

Scheck, M ^[1]; Mukhopadhyay, S; Crider, B; Choudry, S N; Elhami, E; Peters, E E; McEllistrem, M T; Orce, J N ^[2]; Yates, S W ^[3]

---

1. Oliver Lodge Laboratory, University of Liverpool, Liverpool, GB (United Kingdom)
2. Dept. of Physics and Astronomy, University of Kentucky, Lexington, KY (United States)
3. Dept. of Chemistry, University of Kentucky, Lexington, KY (United States)

Low-lying collective states in {sup 136}Ba were investigated with (n,n'{gamma}) techniques, including Doppler-shift attenuation lifetime measurements. The level spins, lifetimes, branching ratios, multipole-mixing ratios and transition strengths reveal candidates for symmetric-phonon states up to third order. The 2{sub ms}{sup +} mixed-symmetry state was confirmed as unfragmented and a candidate for a [2{sub 1}{sup +} x 2{sub ms}{sup +}]{sub 3}{sup +} two-phonon mixed-symmetry state is proposed.

• OSTI ID: 21255417
• Journal Information: AIP Conference Proceedings, Vol. 1090, Issue 1; Conference: 13. international symposium on capture gamma-ray spectroscopy and related topics, Cologne (Germany), 25-29 Aug 2008; Other Information: DOI: 10.1063/1.3087022; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARIUM 136
BRANCHING RATIO
DOPPLER EFFECT
LIFETIME
MIXING RATIO
NEUTRONS
NUCLEAR STRUCTURE
PHONONS
SPIN
SYMMETRY