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利用兰州重离子加速器（HIRFL）所提供的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．由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钍．使用2台高纯锗（HPGe）探测器对样品的γ（X）活性进行测量，观测到了238Th的β-衰变子体238Pa的635．0keV和1060．5keV2条γ射线峰的增长、衰变行为．利用分析递次衰变的计算机程序对其后一条进行了拟合，得到母、子体半衰期分别为（9．4±2．0）min和（2．1±0．4）min，二者分别与预言值和文献值相符．另外，在由238Pa的X射线开门的γ谱中，发现一条能量为89．0keV的新γ射线，经计算，其半衰期为（8．9±1．5）min，由跃迁能量和半衰期的关系认定该射线来源于238Th的β-衰变．从而证明本实验合成和鉴别了重丰中子新核素238Th，并测定它的半衰期为（9．4±2．0）min．
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. Thorium was isolated from a mixture of uranium and its reaction products by a rapid radiochemical separation technique. The γ (X) activity of the sample was measured using two HPGe detectors, and the growth and decay behavior of the γ-ray peaks at 635.0 keV and 1060.5 keV at 238 Pa of the 238Th β-decayed body was observed. The second one was fitted by the computer program which analyzed the successive decay, and the half-lives of the mother and the daughter were (9.4 ± 2.0) min and (2.1 ± 0.4) min, respectively In line with the predictive value and literature value. In addition, a new gamma ray with an energy of 89.0 keV was found in the γ spectrum of the door opened by 238 Pa, and its half-life was calculated to be (8.9 ± 1.5) min, calculated from the relationship between the transition energy and the half-life The ray was found to be derived from the 238Th beta-decay. Thus, we proved that 238Th of heavy heavy neutron neutron was synthesized and identified in this experiment and its half-life was (9.4 ± 2.0) min.