Title of article :
Nuclear structure of 231Ac
Original Research Article
Author/Authors :
R. Boutami، نويسنده , , M.J.G. Borge، نويسنده , , H. Mach، نويسنده , , W. Kurcewicz، نويسنده , , L.M. Fraile، نويسنده , , K. Gulda، نويسنده , , A.J. Aas، نويسنده , , L.M. Garc?a-Raffi، نويسنده , , G. L?vh?iden، نويسنده , , T. Mart?nez، نويسنده , , B. Rubio، نويسنده , , J.L. Tain، نويسنده , , O. Tengblad، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2008
Abstract :
The low-energy structure of 231Ac has been investigated by means of γ ray spectroscopy following the β− decay of 231Ra. Multipolarities of 28 transitions have been established by measuring conversion electrons with a mini-orange electron spectrometer. The decay scheme of 231Ra → 231Ac has been constructed for the first time. The Advanced Time Delayed βγγ(t) method has been used to measure the half-lives of five levels. The moderately fast B(E1) transition rates derived suggest that the octupole effects, albeit weak, are still present in this exotic nucleus.
Keywords :
E? , Advanced Time Delayed (ATD) ???(t) method , ??- , ??-coincidence , T1/2 , deduced , logft , 231Ac deduced , Radioactivity , Levels , 231Fr , J , 231Ra(??) , ? , ( , ICC , X) , multipolarities , Ep=1 GeV and subsequent mass separation] , B(E1) , E? , T1/2 , Measured , B(M1) , I? , mini-orange spectrometer
Journal title :
Nuclear physics A
Journal title :
Nuclear physics A
