Related Experiment Video
Updated: Jan 22, 2026

Optimization of Radiochemical Reactions using Droplet Arrays
Published on: February 12, 2021
Radiochemical reaction of DT/ T2 and CO under high pressure
Jiangfeng Song1, Yifu Xiong2, Liu Lang2
1Institute of Materials, China Academy of Engineering Physics, P.O. Box 9071, Jiangyou, 621907, Sichuan, PR China; Institute of Atomic and Molecular Physics, Sichuan University, PR China.
Abstract:
For both fuel cycle design and safety evolution of tritium (T) in fusion reactor, it is important to study irradiation-induced reactions between T2 and various molecular species produced from nuclear-fusion fuel cleanup systems. The radiochemical reactions between deuterium-tritium/tritium and carbon monoxide of different concentrations under 1.0 MPa were elucidated in this work. The products and the process of radiochemical reactions of T2/CO and D2-T2/CO mixed system with different tritium concentrations were analyzed by mass spectrometry and gas chromatography. The evolution of the product composition in 300 min. was monitored at room temperature with a rapid decrease of tritium concentration and pressure. It was found that, in T2/CO and D2-T2/CO mixed system, only tritium was involved in the reaction of CO. Under the β irradiation of tritium, the reaction products were mainly composed of tritiated formaldehyde (CT2O) and tiny amount of CO2, C(DT)4, C3(DT)8. The concentration of products rose with the increase of CO concentration in reaction system.
Related Concept Videos
Constant Pressure Calorimetry
Reaction Quotient
Measuring Reaction Rates
Vapor Pressure
Homogeneous Equilibria for Gaseous Reactions
For gas-phase reactions, the equilibrium constant may be expressed in terms of either the molar concentrations (Kc) or partial pressures (Kp) of the reactants and products. A relation between these two K values may be simply derived from the ideal gas equation and the definition of molarity. According to the ideal gas equation:
Reaction Mechanisms
For instance, the decomposition of ozone appears to follow a mechanism with two steps:

