Two-phonon octupole excitation in {sup 146}Gd

Journal Article · Mon Mar 15 04:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.81.031301· OSTI ID:21386652

Caballero, L; Rubio, B; Nacher, E ^[1]; Kleinheinz, P ^[2]; Yates, S W ^[3]; Algora, A ^[1]; Dewald, A; Fitzler, A; Jolie, J; Linnemann, A; Moeller, O ^[4]; Gadea, A ^[1]; Julin, R; Piiparinen, M ^[5]; Lunardi, S; Menegazzo, R ^[6]; Blomqvist, J ^[7]

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1. Instituto de Fisica Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia (Spain)
2. Institut fuer Kernphysik, Forschungszentrum Juelich, D-52425 Juelich (Germany)
3. Departments of Chemistry and Physics and Astronomy, University of Kentucky, Lexington, Kentucky, 40506-0055 (United States)
4. Institut fuer Kernphysik, Universitaet zu Koeln, D-50937 Koeln (Germany)
5. Department of Physics, University of Jyvaeskylae, FIN-40014 Jyvaeskylae (Finland)
6. Laboratori Nazionali de Legnaro, INFN, I-35020 Legnaro (Italy)
7. Research Institute of Physics, S-10405 Stockholm 50 (Sweden)

Based on experimental evidence from the {sup 144}Sm({alpha},2n) reaction, the 3484.7-keV 6{sup +} state in {sup 146}Gd is identified as the highest-spin member of the 3{sup -} x 3{sup -} two-phonon octupole quartet. A previously unknown {gamma} line of 1905.8 keV and E3 character feeding the 3{sup -} octupole state has been observed. These results represent the first observation of a 6{sup +}->3{sup -}->0{sup +} cascade of two E3 transitions in an even-even nucleus and provide strong support for the interpretation of the 6{sup +} state as a two-phonon octupole excitation.

• OSTI ID: 21386652
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 81; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA REACTIONS
ANGULAR MOMENTUM
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
DAYS LIVING RADIOISOTOPES
E3-TRANSITIONS
ELECTRON CAPTURE RADIOISOTOPES
EMISSION
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXCITATION
GADOLINIUM 146
GADOLINIUM ISOTOPES
INTERMEDIATE MASS NUCLEI
ISOTOPES
KEV RANGE
MULTIPOLE TRANSITIONS
MULTIPOLES
NEUTRON EMISSION
NUCLEAR REACTIONS
NUCLEI
OCTUPOLES
PARTICLE PROPERTIES
PHONONS
QUASI PARTICLES
RADIOISOTOPES
RARE EARTH NUCLEI
SAMARIUM 144 TARGET
SPIN
TARGETS