The formation energies of a vacancy and an interstitial in solid xenon were calculated to be 0.164 and 0.582eV, respectively. The only stable form of interstitial was found to be the split-100 type.

Formation Energies of a Vacancy and an Interstitial in Solid Xenon. M.Doyama, R.M.J.Cotterill: Physical Review B, 1970, 1[2], 832-3