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arXiv 0902.4309nucl-ex
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通过$^{7}$ Li+ $^{nat}$ Zr和$^{9}$ Be+ $^{nat}$ Y反应制备$^{93,94,95,96}$ Tc:激发函数的测量

Production of $^{93,94,95,96}$Tc through $^{7}$Li+$^{nat}$Zr and $^{9}$Be+$^{nat}$Y reactions: Measurement of excitation functions

Moumita Maiti, Susanta Lahiri

摘要:

第一次研究了两种不同的Tc放射性核素的产生途径,即在$^{nat}$ Zr上轰击$^{7}$ Li和在$^{89}$ Y上轰击$^{9}$ Be。在37-45 MeV和30-48 MeV的能量范围内,用叠箔法测量了这些反应中产生的蒸发残渣的激发函数,然后进行了$γ$光谱研究。测量的激发函数进行了比较,使用核反应模型代码PACE-II和ALICE 91计算。实验结果与理论预测吻合较好。复合核反应是蒸发残渣产生的主要机理。

英文摘要:

For the first time two separate production routes of Tc radionuclides have been studied bombarding $^{7}$Li on $^{nat}$Zr and $^{9}$Be on $^{89}$Y. Excitation functions of the evaporation residues produced in those reactions have been measured using stacked-foil technique followed by the $γ$-spectrometric studies in the energy range 37-45 MeV and 30-48 MeV respectively. Measured excitation functions have been compared with those calculated using the nuclear reaction model codes PACE-II and ALICE91. Experimental results show good agreement with the theoretical predictions. Compound nuclear reaction is the key mechanism in producing evaporation residues.

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