INVESTIGATION OF SHORT-LIVED ISOMERS IN NUCLEI NB-90,NB-92,MO-99,TC-98,TC-100,TC-101 AND RU-101

Short-lived isomers in the nuclei90,92Nb,99Mo,98,100,101Tc and101Ru populated in photonuclear reactions were studied by pulsed beam techniques. Energy and half-life of the γ-rays deexciting the isomeric levels were measured by recording energy-time spectra. The delayed γ-rays and K X-rays were detected by means of an intrinsic Ge-detector of high resolution. From the measured intensity ratios internal conversion coefficients were determined. The multipolarities of the isomeric transitions could be deduced in most cases. A classification of the observed isomers has been tried on the basis of the obtained experimental results and most recent literature data. © 1978 Springer-Verlag.