[en] The 2H(d,γ)4He differential cross section was measured at deuteron laboratory energies of 20, 24, and 28 MeV between θcm=45o and θcm=135o. At Ed=28 MeV a complete angular distribution was determined and fitted with Legendre polynomials. The ratio R=dσ/dΩ (θcm=90o)/dσ/dΩ (θcm=135o) was measured for each deuteron energy. (Authors)