Radiochemical reaction of DT/ T2 and CO under high pressure

Jiangfeng Song; Yifu Xiong; Liu Lang; Yan Shi; Jingwen Ba; Wenyong Jing; Mingming He

doi:10.1016/j.jhazmat.2019.05.113

Radiochemical reaction of DT/ T₂ and CO under high pressure

J Hazard Mater. 2019 Oct 15:378:120720. doi: 10.1016/j.jhazmat.2019.05.113. Epub 2019 May 31.

Authors

Jiangfeng Song¹, Yifu Xiong², Liu Lang³, Yan Shi³, Jingwen Ba³, Wenyong Jing³, Mingming He³

Affiliations

¹ Institute 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.
² Institute of Materials, China Academy of Engineering Physics, P.O. Box 9071, Jiangyou, 621907, Sichuan, PR China. Electronic address: iterchina@163.com.
³ Institute of Materials, China Academy of Engineering Physics, P.O. Box 9071, Jiangyou, 621907, Sichuan, PR China.

PMID: 31302477
DOI: 10.1016/j.jhazmat.2019.05.113

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.

Keywords: CO; DT; Fusion; Reaction; Tritium.

Publication types

Research Support, Non-U.S. Gov't