Multiphonon vibrations at high angular momentum in ¹⁸²Os

Evidence is presented for multiphonon excitations based on a high-spin (25) intrinsic state in the deformed nucleus ¹⁸²Os. Angular momentum generation by this mode competes with collective rotation. The experimental data are compared with tilted-axis cranking calculations, supporting the vibrational interpretation. However, the lower experimental energies provide evidence that more complex interactions of states are playing a role.