Lifetime measurements of the first $2^{+}$ states in 104,106Zr: Evolution of ground-state deformations

Journal Article · Sun Nov 01 00:00:00 EDT 2015 · Physics Letters B

DOI:https://doi.org/10.1016/j.physletb.2015.09.043· OSTI ID:1222247

Browne, F.; Bruce, A. M.; Sumikama, T.; Nishizuka, I.; Nishimura, S.; Doornenbal, P.; Lorusso, G.; Söderström, P. -A.; Watanabe, H.; Daido, R.; Patel, Z.; Rice, S.; Sinclair, L.; Wu, J.; Xu, Z. Y.; Yagi, A.; Baba, H.; Chiga, N.; Carroll, R.; Didierjean, F. ; Fang, Y.; Fukuda, N.; Gey, G.; Ideguchi, E.; Inabe, N.; Isobe, T.; Kameda, D.; Kojouharov, I.; Kurz, N.; Kubo, T.; Lalkovski, S.; Li, Z.; Lozeva, R.; Nishibata, H.; Odahara, A.; Podolyák, Zs.; Regan, P. H.; Roberts, O. J.; Sakurai, H.; Schaffner, H.; Simpson, G. S.; Suzuki, H.; Takeda, H.; Tanaka, M.; Taprogge, J.; Werner, V.; Wieland, O.

In this study, the first fast-timing measurements from nuclides produced via the in-flight fission mechanism are reported. The lifetimes of the first 2⁺ states in ^104,106Zr nuclei have been measured via β-delayed γ-ray timing of stopped radioactive isotope beams. An improved precision for the lifetime of the 2⁺₁ in ¹⁰⁴Zr was obtained, τ(2⁺₁) = 2.90⁺²⁵_–20, as well as a first measurement of the 2⁺₁ state in ¹⁰⁶Zr, τ(2⁺₁) = 2.60⁺²⁰_–15 ns, with corresponding reduced transition probabilities.

• Research Organization: Yale Univ., New Haven, CT (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: FG02-91ER-40609; FG02-91ER40609
• OSTI ID: 1222247
• Alternate ID(s): OSTI ID: 1241142
• Journal Information: Physics Letters B, Journal Name: Physics Letters B Vol. 750 Journal Issue: C; ISSN 0370-2693
• Publisher: Elsevier
• Country of Publication: Netherlands
• Language: English

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74 ATOMIC AND MOLECULAR PHYSICS