The high-lying ${}^6$Li levels at excitation energy around 21 MeV

The ${}^3$H+${}^3$He cluster structure in ${}^6$Li was investigated by the ${}^3$H($\alpha$,${}^3$H ${}^3$He)n kinematically complete experiment at the incident energy $E_{\alpha }$ = 67.2 MeV. We have observed two resonances at $E_x^{\ast }$ = 21.30 and 21.90 MeV which are consistent with the ${}^3$He(${}^3$H, $\gamma$)${}^6$Li analysis in the Ajzenberg-Selove compilation. Our data are compared with the previous experimental data and the RGM and CSRGM calculations.