Preservation of Alignment of Recoiling Nuclei and Detection with the Mössbauer EFFECT

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Abstract
The nuclear alignment following Coulomb excitation was detected by observing directly the sublevel populations with the quadrupole Mössbauer effect. The alignment was preserved in flight from the target to a single crystal of Zn by frequent collisions with gas molecules. The hyperfine magnetic field acting on the recoil nuclei in flight was determined by observing the residual alignment for different gas pressures.