We have used classical hot-atom chemistry to put tritium atoms inside fullerene molecules. The tritium is generated in a nuclear reactor with the reaction 6Li(n,α)3H. The hot tritium atom slows down and can end up being thermalized inside a fullerene where it is trapped. The irradiated sample is dissolved, chromatographed, and counted in a scintillation counter, showing a small tritium activity. After some time, the sample is analyzed with a sensitive mass spectrometer, and 3He was found on heating above 400°C, showing that the tritium had decayed leaving the 3He trapped inside the fullerene. © 1994.
Jiménez-Vázquez, H. A., Cross, R. J., Saunders, M., & Poreda, R. J. (1994). Hot-atom incorporation of tritium atoms into fullerenes. Chemical Physics Letters, 229(1–2), 111–114. https://doi.org/10.1111/j.0300-9475.2004.01501.x