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YUAN Shuang-Gui, XU Yan-Bing, DING Hua-Jie, YANG Wei-Fan, NIU Yan-Ning and XIAO Yong-Hou. β-delayed fission of 228Ac[J]. Chinese Physics C, 2008, 32(S2): 53-55.
YUAN Shuang-Gui, XU Yan-Bing, DING Hua-Jie, YANG Wei-Fan, NIU Yan-Ning and XIAO Yong-Hou. β-delayed fission of 228Ac[J]. Chinese Physics C, 2008, 32(S2): 53-55. shu
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Received: 2008-07-16
Revised: 1900-01-01
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β-delayed fission of 228Ac

    Corresponding author: YUAN Shuang-Gui,

Abstract: The basic process of an exotic decay mode namely β-delayed fission is simply introduced. The progress status of the study in the world is essentialized. The observation of β-delayed fission of 228Ac is reported. The radium was radiochemically separated from natural thorium. Thin Ra sources in which 228Ac was got through 228Ra →β-228Ac were prepared for observing fission fragments from β-delayed fission of 228Ac. They exposed to the mica fission track detectors, and measured by an HPGe γ-ray detector. The β-delayed fission events of 228Ac were observed and its β-delayed fission probability was found to be (5±2)×10-12.

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