  We explore the structure of resonance states in $^{6}$He by experimental and
theoretical methods. We present the results of experimental investigations of
the three-body continuous spectrum of $^{6}$He. For this aim, we use the
reaction $^{3}$H$( \alpha,p\alpha)nn$, which is induced by the interaction of
alpha-particles with a triton at the beam energy $E_{\alpha} =$~67.2 MeV. The
theoretical analysis of the resonance structure in $^{6}$He is carried out
within the framework of a three-cluster microscopic model. The model exploits
the hyperspherical harmonics to describe the intercluster dynamics. The set of
new resonance states is discovered by the experimental and theoretical methods.
The energy, width, and dominant decay channels of resonances are determined.The
obtained results are compared in detail with the results of different
theoretical models and experiments as well.
