Neutroneneinfangsgammaspektrum und Niveauschema von Erbium167

The (n, gamma)-spectrum of Er 167 was investigated by means of the Risø bent crystal spectrometer. The energies and intensities of 47 transitions were measured. 22 of them were fitted into a level scheme. The rotational bands of theK=7/2+[633],K=1/2–[521], andK=5/2–[512] states were found up to the spin valuesI=11/2+, 9/2–, and 7/2–. Gammavibrational states of these Nilsson orbitals were determined or proposed. The energy of theK=5/2–[523] state was suggested. Branching ratios of gamma transitions were compared with theoretical predictions.