The nuclear dd-fusion reaction can proceed by three possible channels: \({}^{3}\textrm{H}+p\ (\approx 50\%)\) , \({}^{3}\textrm{He}+n\ (\approx 50\%)\) , \({}^{4}\textrm{He}+\gamma\ (\approx 10^{-7}\%)\) . Interest in dd-fusion has been aroused by both fundamental research and astrophysics and applied science, particularly in the field of fusion reactor development. In the 1970s, the idea of studying the nuclear dd-fusion reaction using polarized deuteron beams was proposed at the Kurchatov Institute. The development of this idea was continued in the PolFusion (polarized fusion) nuclear physics experiment, which aims at studying the reaction of nuclear dd synthesis with polarized source particles in the low energy region. The experiment is planned to measured the scattering asymmetries of dd-fusion reaction products in the final state at different mutual orientation of the spins of colliding deuterons in the energy range 10–100 keV. The authors present an overview of the status of the experiment.
