相关实验视频
Updated: Jul 14, 2025

10:42
Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
Published on: May 3, 2019
6.8K
目标系统的优化,以通过100Mo (γ,n) 99Mo反应产生99Mo
Mu Lin1, Wei Tian1, Jieru Wang1
1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.
概括
核反应堆关闭正在限制医疗用-99的供应. 一个电子线性加速器和-100目标系统提供了一个有希望的替代方案,通过Geant4模拟和试点实验验证.
科学领域:
- 核物理与工程 核物理与工程
- 医疗同位素生产 医疗同位素生产
背景情况:
- 全球减少核反应堆运行影响了医疗用-99 (99Mo) 的供应.
- 开发替代生产方法对于确保99Mo的稳定供应至关重要.
研究的目的:
- 研究一种使用电子线性加速器 (linac) 和-100 (100Mo) 目标生产99Mo的替代方法.
- 为了优化目标系统使用蒙特卡洛模拟 (Geant4) 进行试点辐射实验.
- 通过一阶段和两阶段方法生产的99Mo的特定活性进行比较.
主要方法:
- 利用Geant4蒙特卡洛模拟来建模和优化99Mo的生产过程.
- 根据转换器材料 (,),厚度和电子束能量评估了99Mo的产量.
- 使用100Mo目标和转换器进行试点辐射实验.
主要成果:
- 在测试条件下,双阶段方法 (100Mo目标与转换器) 与单阶段方法相比,显示了99Mo的更高的特异活性.
- 优化的目标参数包括10毫米100Mo平板厚度和2.4毫米转换器.
- 针对特定活动的Geant4模拟结果与实验值密切匹配,验证了模拟的准确性.
结论:
- 电子和100Mo目标系统是低杂质水平的99Mo生产的可行替代方案.
- 对于更高的特异性活动,采用转换器的两级方法是首选的.
- Geant4模拟是一个可靠的工具,用于优化未来的99Mo生产流程,使用高功率的Linac系统.
相关概念视频
Nuclear Transmutation
17.6K
Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed...
17.6K
Nuclear Power
7.8K
Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
7.8K

