Ho. Denschlag et al., ON THE ABSOLUTE GAMMA-RAY LINE-INTENSITIES IN THE DECAY OF NB-99 AND THE BRANCHING RATIO IN THE DECAY OF ZR-99 TO NB-99M AND NB-99G, Radiochimica Acta, 62(4), 1993, pp. 177-179
The absolute gamma-ray line intensities in the decay of 2.6 min 99mNb
and the branching ratio of 99Zr have been measured by comparing gamma-
ray spectra of a mass separated fraction of chain 99 with the yield di
stribution determined independently. The measurements confirm earlier
results but are at variance with the values adopted in Nuclear Data Sh
eets.