Preparation of large-area isotopic magnesium targets for the 25Mg(p,γ)26Al experiment at JUNA

• 作者: Chen Chen Hao Zhang Yun-Ju Li Zhi-Hong Li
• 来源期刊: 核技术（英文版）
• 年，卷（期）: 2020,（9）
• 所属期刊栏目: NUCLEAR PHYSICS AND INTERDISCIPLINARY RESEARCH
• 页码范围: 75-81
• 页数: 7页
• 语种: 英文

摘要

To study the 25Mg(p,γ)26Al reaction at the Jin-ping Underground Nuclear Astrophysics laboratory, a large-area 25Mg target with a uniform thickness is needed. A rotating unit is used to ensure the uniformity of the target thickness during evaporation. After many attempts, 19 targets with diameters of 40 mm and a non-uniformity of 8.4％ were prepared simultaneously. The rate of material utilization was approximately 4.7 times higher than that obtained using a conventional evaporation method.