Radioactive endohedral Be-7@C-60 can be detected using radiochemical and radiochromatographic techniques in the final solvent. Such a Be-7 atom can penetrate into the C-60 cage to produce Be-7@C-60 by a recoil process of the nuclear reactions. An ab initio molecular dynamics simulation was carried out to demonstrate that a direct insertion process is really possible. Both the experimental and the theoretical results were consistent with each other.