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利用兰州重离子加速器（ＨＩＲＦＬ）提供的６０ＭｅＶ／ｕ的１８Ｏ离子束照射天然铀靶，通过多核子转移反应生成２３８Ｔｈ．用快速放射化学分离技术从铀及其反应产物的混合物中分离出Ｔｈ同位素．使用两台高纯锗（ＨＰＧｅ）探测器测量了样品的γ射线活性，观测到了２３８Ｔｈ的β－衰变子体２３８Ｐａ的γ射线的生长、衰变行为，测定２３８Ｔｈ的半衰期为９．４±２．０ｍｉｎ．
The natural uranium target was irradiated with 60MeV / u 18O ion beam provided by Lanzhou Heavy Ion Accelerator (HIRFL) and 238Th was generated by multi-nuclear transfer reaction. Th isotopes were isolated from a mixture of uranium and its reaction products using rapid radiochemical separation techniques. The γ-ray activity of the sample was measured using two HPGe detectors. The γ-ray growth and decay behavior of the 238Th β-decayed 238Pα was observed. The half-life of the 238Th was determined to be 9.4 ± 2.0 min .