放射化学

Radiochemistry is the study of the chemical behavior of radioactive elements.
放射化学是研究放射性元素化学行为的学科。
In radiotherapy, radioisotopes are used to treat cancer by emitting ionizing radiation.
在放疗中，利用放射性同位素发出电离辐射来治疗癌症。
The半衰期of a radioelement is the time it takes for half of its nuclei to decay chemically.
放射性元素的半衰期是指其原子核半数发生化学衰变所需的时间。
Radiochemical purity is crucial in the production of radiopharmaceuticals to ensure safety and efficacy.
在生产放射性药物时，放射化学纯度至关重要，以确保安全性和有效性。
The tracer technique in radiochemistry involves using a small amount of radioactive substance to track chemical reactions or processes.
放射化学中的示踪技术涉及使用少量放射性物质来追踪化学反应或过程。
Radiochemical analysis is used to determine the concentration of trace elements in environmental samples.
放射化学分析用于确定环境样品中痕量元素的浓度。
Uranium-235 is a fissionable material that undergoes nuclear chain reactions in a nuclear reactor due to its radioactivity.
铀-235是一种具有放射性的可裂变材料，在核反应堆中因其放射性而产生核链式反应。
The process of nuclear fuel reprocessing employs radiochemistry to extract valuable materials from spent fuel rods.
核燃料再处理过程中采用放射化学方法从用过的燃料棒中提取有价值的材料。
Tritium, a radioactive isotope of hydrogen, is used as a coolant and neutron moderator in some advanced nuclear reactors.
氚，氢的一种放射性同位素，被用作某些先进核反应堆的冷却剂和中子减速剂。
Radiocarbon dating, based on the decay of carbon-14, is a widely used method in archaeology to determine the age of organic materials.
放射性碳测年基于碳-14的衰变，是考古学中广泛使用的一种测定有机材料年代的方法。