Influence of radioactive filiation on measured release curves

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• 作者：G. Lhersonneau ; A.E. Barzarkh ; V. Rizzi ; O. Alyakrinskiy ; K.A. Mezilev ; F.V. Moroz ; V.N. Panteleev and L.B. Tecchio
• 关键词：Isotope separation on-line ; Release time ; Decay in target
• 刊名：Nuclear Instruments and Methods in Physics Research Section A ; Accelerators ; Spectrometers ; Detectors and Associated Equipment
• 出版年：2006
• 期刊代码：41_01689002
• 类别：ph
• 出版时间：15 October 2006
• 卷：566
• 期：2
• 页码：465-471
• 文件大小：220 K

摘要

Perturbation of measured release curves of radioactive nuclei by the decay of precursor nuclei in the target is investigated. The target is described by a simple model taking into account the direct production of the nucleus of interest by the reaction but also allowing decay of the isobaric precursor to take place specifically during diffusion or effusion. Their respective contributions to the observed ion currents can be enough different to lead to uncorrect analysis of the experimental release curves. As an example we discuss release curves of the pairs of neutron-rich isotopes (, ⁹¹Rb) and (, ¹³⁹Cs) produced by proton-induced fission at the IRIS facility, Gatchina.