A precursor of β-delayed fission: 230Ac

A precursor of β-delayed fission: ²³⁰Ac

XU Yan-Bing，

YANG Wei-Fan，

YUAN Shuang-Gui，

LUO Yi-Xiao，

XIAO Yong-Hou

Nuclear Science and Techniques

Vol.13, No.1

pp.1-5

Published in print 01 Feb 2002

CLC：O571.3, O571.32

20800

The ²³⁰Ra has been produced via multinucleon transfer and dissipative fragmentation of heavy target in the 60 MeV/u ¹⁸O ion reaction with natural thorium. The radium was radiochemically separated from irradiated thorium targets. ²³⁰Ac was obtained by $^{230} R a \overset{β -}{\to} {}^{230}A c$ , Thin Ra sources were prepared for observing fission fragments from β-delayed fission of ²³⁰Ac. The sources were exposed to the mica fission track detectors and measured by a HPGe γ detector. The two fission events were obtained and could been assigned to the β-delayed fission of ²³⁰Ac. The β-delayed fission probability of ²³⁰Ac was determined to be (1.19±0.85)×10^-8.

β-delayed fissionMultinucleon transfer reactionDissipative fragmentation of heavy targetRadiochemical separation

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