核分裂生成物希ガスによる黒鉛中の格子欠陥の研究

抄録

The lattice deffect in graphite was studied by the use of the emanating fission product xenon which was trapped in graphite by the fission recoil.
Four peaks were found in the heating curve of natural graphite but not in the case of artificial graphite. The activation energies for xenon release were measured at the temperatures where these peaks appear. The observed activation energies at each peak were compared with the calculated values and the classification of lattice deffects was considered.
The lattice deffects in natural graphite were caused by fission recoil and they were elucidated as the interstitial cluster, single vacancy, combination of single vacancies, and di-vacancy, respectively.