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Open Access item Lifetime measurement of the 167.1 keV state in Ar-41

Authors:White, E. R.
Mach, H.
Fraile, Luis M.
Köster, U.
Arndt, O.
Blazhev, A.
Boelaert, N.
García Borge, María José
Boutami, Rafik
Bradley, H.
Braun, N.
Dlouhy, Z.
Fransen, C.
Fynbo, H. O. U.
Hinke, Ch.
Hoff, P.
Joinet, A.
Jokinen, A.
Jolie, J.
Korgul, A.
Kratz, K.-L.
Kröll, T.
Kurcewicz, W.
Nyberg, J.
Reillo, E-M.
Ruchowska, E.
Schwerdtfeger, W.
Simpson, G. S.
Stanoiu, M.
Tengblad, Olof
Thirolf, P. G.
Ugryumov, V.
Walters, W. B.
Keywords:[PACS] Lifetimes, widths, [PACS] β decay; double β decay; electron and muon capture, [PACS] Properties of specific nuclei listed by mass ranges: 39 ≤ A ≤ 58
Issue Date:27-Nov-2007
Publisher:American Physical Society
Citation:Physical Review C 76(5): 057303 (2007)
Abstract:The Advanced-Time-Delayed method was used to measure lifetimes of the states in Ar-41 populated in the β decay of Cl-41. The nuclei Cl-41 were produced at ISOLDE by 1.4-GeV proton bombardment of a thick UCx target and mass-separated as molecular ions, XeCl+. Our measured half-life of the 167.1-keV state, T(1/2) = 315(15) ps, is significantly lower than the previously measured value of 410(30) ps. We have also determined T(1/2) = 260(80) ps and T(1/2) ≤ 46 ps for the 515.9- and 1867.7-keV states, respectively. These are the shortest lifetimes measured so far with the ultrafast timing method using the new LaBr3(Ce) crystals for γ-ray detection.
Description:4 pages, 3 figures, 1 table.-- PACS nrs.: 21.10.Tg; 23.40.−s; 27.40.+z.
Publisher version (URL):http://dx.doi.org/10.1103/PhysRevC.76.057303
Appears in Collections:(CFMAC-IEM) Artículos

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