Population of Metastable States in Stable Hafnium and Ytterbium Nuclei via Beam Break-up

Journal Article · Mon Nov 21 00:00:00 EST 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2140656· OSTI ID:20719721

Malwela, T; Ntshangase, S S; Shirinda, O ^[1]; Bark, R A; Gueorguieva, E; Lawrie, J J; Mullins, S M; Murray, S H.T.; Sharpey-Schafer, J F ^[1]; Gal, J; Kalinka, G; Krasznahorkay, A; Molnar, J; Nyako, B M; Timar, J; Zolnai, L ^[2]; Hlatshwayo, T ^[1]; Juhasz, K ^[3]; Komati, F S ^[1]; Scheurer, J N ^[4]

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1. iThemba LABS, P.O.Box 722, Somerset West 7129 (South Africa)
2. Institute of Nuclear Research, Debrecen (Hungary)
3. Institute of Informatics, University of Debrecen, Debrecen (Hungary)
4. CNRS-IN2P3-Universite de Bordeaux I, 33175 Gradignan Cedex (France)

The ''Chessboard'' section of the DIAMANT charged-particle array has been coupled with the AFRODITE {gamma}-ray spectrometer at the iThemba Laboratory for Accelerator Based Sciences. Charged-particle-{gamma}-ray coincidence data were recorded during the bombardment of a 176Yb target with a 13C beam at an energy of 90 MeV. The purpose of the investigation was to study the population of metastable states in hafium nuclei via incomplete fusion reactions in which the beam breaks up due to its {alpha}-cluster character. Of note was the observation of the band based on the K{pi} = 16+, T1/2 = 31 year isomer in 178Hf to its 19+ member. Also, decays from the high-K isomeric states in 174Yb and 176Yb. which were populated via 3{alpha}xn channels, indicative of complete break-up of the 13C beam.

• OSTI ID: 20719721
• Journal Information: AIP Conference Proceedings, Vol. 802, Issue 1; Conference: ENS'05: International symposium on exotic nuclear systems, Debrecen (Hungary), 20-25 Jun 2005; Other Information: DOI: 10.1063/1.2140656; (c) 2005 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
BREAKUP REACTIONS
CARBON 13 BEAMS
CHARGED PARTICLES
GAMMA RADIATION
GAMMA SPECTROMETERS
HAFNIUM 178
INCOMPLETE FUSION REACTIONS
ISOMERS
MEV RANGE 10-100
YTTERBIUM 174
YTTERBIUM 176
YTTERBIUM 176 TARGET