Octupole transitions in the 208Pb region. (9th February 2015)

• Record Type: Journal Article
• Authors: Podolyák, Zs; Shand, C M; Wilson, E; Brown, B A; Grawe, H; Chiara, C J; Zhu, S; Fornal, B; Janssens, R V F; Bowry, M; Bunce, M; Carpenter, M P; Cieplicka, N; Deo, A Y; Dracoulis, G D; Hoffman, C R; Kempley, R S; Kondev, F G; Lane, G J; Lauritsen, T; Lotay, G; Reed, M W; Regan, P H; Triguero, C Rodríguez; Seweryniak, D; Szpak, B; Walker, P M
• Is Part Of: Journal of physics. Number 580(2015)
• Page Start: 012010
• Publication Date: 2015-02-09
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/580/1/012010
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: The 208 Pb region is characterised by the existence of collective octupole states. Here we populated such states in 208 Pb + 208 Pb deep-inelastic reactions. γ-ray angular distribution measurements were used to infer the octupole character of several E3 transitions. The octupole character of the 2318 keV 17 − → 14 + in 208 Pb, 2485 keV 19/2 − → 13/2 + in 207 Pb, 2419 keV 15/2 − → 9/2 + in 209 Pb and 2465 keV 17/2 + → 11/2 − in 207 Tl transitions was demonstrated for the first time. In addition, shell model calculations were performed using two different sets of two-body matrix elements. Their predictions were compared with emphasis on collective octupole states.