Octupole signatures in Ba-124,Ba-125

The gamma decay of the nuclei Ba-121,Ba-125 has been investigated with the EUROBALL array, using the reaction Ni-64+Ni-64 at E-beam = 255 and 261 MeV. Six new E1 transitions have been found in the nucleus Ba-125, suggesting a significant role of octupole correlations in the origin of its parity doub...

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Veröffentlicht in:	Journal of physics. G, Nuclear and particle physics Nuclear and particle physics, 2005-10, Vol.31 (10), p.S1729
Hauptverfasser:	Mason, P, Benzoni, G, Bracco, A, Camera, F, Million, B, Wieland, O, Leoni, S, Singh, A K, Al-Khatib, A, Hubel, H, Bringel, P, Burger, A, Neusser, A, Schonwasser, G, Hagemann, G B, Hansen, C R, Herskind, B, Sletten, G, Algora, A, Dombradi, Z, Gal, J, Kalinka, G, Molnar, J, Nyako, B M, Sohler, D, Timar, J, Zolnai, L, Kmiecik, M, Maj, A, Styczen, J, Zuber, K, Azaiez, F, Hauschild, K, Korichi, A, Lopez-Martens, A, Roccaz, J, Siem, S, Hannachi, F, Scheurer, J N, Bednarczyk, P, Byrski, T, Curien, D, Dorvaux, O, Duchene, G, Gall, B, Khalfallah, F, Piqueras, I, Robin, J, Juhasz, K, Patel, S B, Evans, A O, Rainovski, G, Petrache, C M, Petrache, D, La Rana, G, Moro, R, De Angelis, G, Fallon, P, Lee, I Y, Lisle, J C, Cederwall, Bo, Lagergren, Karin, Lieder, R. M., Podsvirova, E, Gast, W, Jager, H, Redon, N, Gorgen, A
Format:	Artikel
Sprache:	eng
Schlagworte:	Euroball Gamma-Ray Spectroscopy Nuclei Spectrometer States
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	The gamma decay of the nuclei Ba-121,Ba-125 has been investigated with the EUROBALL array, using the reaction Ni-64+Ni-64 at E-beam = 255 and 261 MeV. Six new E1 transitions have been found in the nucleus Ba-125, suggesting a significant role of octupole correlations in the origin of its parity doublets. The J(pi) = 3(-) level of the nucleus Ba-124 has been identified for the first time. Its excitation energy is in very good agreement with a prediction based on a microscopic model including octupole interactions.
ISSN:	0954-3899 1361-6471
DOI:	10.1088/0954-3899/31/10/063