Details

Autor(en) / Beteiligte

• 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.

Titel

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

Ist Teil von

• Physics letters. B, 2015-11, Vol.750 (C), p.448-452

Ort / Verlag

Netherlands: Elsevier

Erscheinungsjahr

2015

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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+1state in 104Zr was obtained, τ(2+1) =2.90+25−20ns, as well as a first measurement of the 2+1state in 106Zr, τ(2+1) =2.60+20−15ns, with corresponding reduced transition probabilities of B(E2; 2+1→0+g.s.) =0.39(2)e2b2and 0.31(1)e2b2, respectively. Comparisons of the extracted ground-state deformations, β2=0.39(1)(104Zr) and β2=0.36(1)(106Zr) with model calculations indicate a persistence of prolate deformation. The data show that 104Zr is the most deformed of the neutron-rich Zr isotopes measured so far.