Identification Of The J(Pi)=1(-) Two-Phonon State Of Sr-88

The linearly polarized gamma-ray beam produced by the HIgammaS facility has been used to determine the parity of two previously known dipole excitations in Sr-88. The azimuthal asymmetry of gamma rays produced in the process of nuclear resonance fluorescence indicated that the dipole state at 4.742 MeV, recently discussed as a new form of M1 excitation, is in fact a 1(-) (E1) state. The 1(-) state at 4.742 MeV must, therefore, be reconsidered as the J(pi)=1(-) member of the quadrupole-octupole coupled two-phonon multiplet. A second state at 7.535 MeV was also assigned J(pi)=1(-).