Low-lying E1,M1, and E2 strength distributions in {sup 124,126,128,129,130,131,132,134,136}Xe: Systematic photon scattering experiments in the mass region of a nuclear shape or phase transition

Journal Article · Mon May 15 00:00:00 EDT 2006 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.73.054315· OSTI ID:20771536

Garrel, H von; Kneissl, U; Kohstall, C; Pitz, H H; Scheck, M; Stedile, F; Walter, S ^[1]; Brentano, P von; Fransen, C; Friessner, G; Hollmann, N; Jolie, J; Linnemann, A; Muecher, D; Pietralla, N; Scholl, C; Werner, V ^[2]; Kaeppeler, F; Wisshak, K ^[3]; Kaeubler, L ^[4]

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1. Institut fuer Strahlenphysik, Universitaet Stuttgart, D-70569 Stuttgart (Germany)
2. Institut fuer Kernphysik, Universitaet zu Koeln, D-50937 Cologne (Germany)
3. Institut fuer Kernphysik, Forschungszentrum Karlsruhe, D-76021 Karlsruhe (Germany)
4. Institut fuer Kern- und Hadronenphysik, Forschungszentrum Rossendorf, D-01314 Dresden (Germany)

Systematic nuclear resonance fluorescence (NRF) experiments on all nine stable (seven even-even and two odd-mass) Xe isotopes have been performed at the bremsstrahlung facility of the 4.3-MV Stuttgart Dynamitron accelerator. For the first time thin-walled, high-pressure gas targets (about 70 bar) with highly enriched target material were used in NRF experiments. Precise excitation energies, transition strengths, spins, and decay branching ratios were obtained for numerous states, most of them previously unknown. The systematics of the observed E1 two-phonon excitations (2{sup +}x3{sup -}) and M1 excitations to 1{sup +} mixed-symmetry states in the even-even isotopes are discussed with respect to the new critical point symmetry E(5). The fragmentation of these fundamental dipole excitation modes in the odd-mass isotopes {sup 129,131}Xe is shown and discussed. In the even-even nuclei several low-lying E2 excitations were observed.

• OSTI ID: 20771536
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 73, Issue 5; Other Information: DOI: 10.1103/PhysRevC.73.054315; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BRANCHING RATIO
BREMSSTRAHLUNG
DIPOLES
DISTRIBUTION
DYNAMITRONS
E1-TRANSITIONS
ENERGY LEVELS
EXCITATION
NUCLEAR DECAY
PHASE TRANSFORMATIONS
PHONONS
PHOTON-NUCLEON INTERACTIONS
PHOTONS
RESCATTERING
RESONANCE FLUORESCENCE
RESONANCE SCATTERING
SPIN
SYMMETRY
XENON 124
XENON 126
XENON 127
XENON 129
XENON 131
XENON 136