New data on the giant dipole resonance of 40Ca nucleus

New experimental data on partial channels of giant dipole resonance (GDR) decay of 40Ca are presented. Data about 33 partial channels of photodisintegration are obtained, 16 of them being obtained for the first time. In particular, data on (γ, 2psub(i)), (γ, tausub(i)) and (γ, dsub(i)) reactions are obtained for the first time. The problem on purity of isospin GDR states is investigated. It is established that impurity of states with T=0 to the states with T=1 in the maximum range of GDR doesn't exceed 2-3%. A part of half-line ar components in the partial photonucleon cross sections and in the cross section of 40Ca nucleus photoabsorption (in the last it constitutes 0.55) is determined