Direct decomposition processing of tritiated methane by helium RF plasma

Kazunari Katayama; Satoshi Fukada

doi:10.1080/15361055.2017.1293412

Direct decomposition processing of tritiated methane by helium RF plasma

Kazunari Katayama, Satoshi Fukada

Engineering Science for Advanced energy system

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

With the aim of developing a method for the recovery of tritium from tritium-bearing hydrocarbons, it was shown experimentally that methane can be decomposed directly into hydrogen and carbon in RF plasmas via reactions initiated by electrons. Measurements performed with CH₄ and CH₃T in a helium RF plasma indicate that the degree of decomposition of CH₃T is substantially smaller than that of CH₄. This is considered to be caused by a very low concentration of CH₃T. It was found that a majority of tritium dissociated from CH₃T is retained in the plasma reactor. However, a certain amount of retained tritium could be removed by a discharge-cleaning of oxygen.

Original language	English
Pages (from-to)	426-431
Number of pages	6
Journal	Fusion Science and Technology
Volume	71
Issue number	3
DOIs	https://doi.org/10.1080/15361055.2017.1293412
Publication status	Published - Apr 2017

All Science Journal Classification (ASJC) codes

Civil and Structural Engineering
Nuclear and High Energy Physics
Nuclear Energy and Engineering
Materials Science(all)
Mechanical Engineering

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10.1080/15361055.2017.1293412

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abstract = "With the aim of developing a method for the recovery of tritium from tritium-bearing hydrocarbons, it was shown experimentally that methane can be decomposed directly into hydrogen and carbon in RF plasmas via reactions initiated by electrons. Measurements performed with CH4 and CH3T in a helium RF plasma indicate that the degree of decomposition of CH3T is substantially smaller than that of CH4. This is considered to be caused by a very low concentration of CH3T. It was found that a majority of tritium dissociated from CH3T is retained in the plasma reactor. However, a certain amount of retained tritium could be removed by a discharge-cleaning of oxygen.",

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N2 - With the aim of developing a method for the recovery of tritium from tritium-bearing hydrocarbons, it was shown experimentally that methane can be decomposed directly into hydrogen and carbon in RF plasmas via reactions initiated by electrons. Measurements performed with CH4 and CH3T in a helium RF plasma indicate that the degree of decomposition of CH3T is substantially smaller than that of CH4. This is considered to be caused by a very low concentration of CH3T. It was found that a majority of tritium dissociated from CH3T is retained in the plasma reactor. However, a certain amount of retained tritium could be removed by a discharge-cleaning of oxygen.

AB - With the aim of developing a method for the recovery of tritium from tritium-bearing hydrocarbons, it was shown experimentally that methane can be decomposed directly into hydrogen and carbon in RF plasmas via reactions initiated by electrons. Measurements performed with CH4 and CH3T in a helium RF plasma indicate that the degree of decomposition of CH3T is substantially smaller than that of CH4. This is considered to be caused by a very low concentration of CH3T. It was found that a majority of tritium dissociated from CH3T is retained in the plasma reactor. However, a certain amount of retained tritium could be removed by a discharge-cleaning of oxygen.

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Direct decomposition processing of tritiated methane by helium RF plasma

Abstract

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