PRECISION MEASUREMENTS OF ENERGIES OF GAMMA-RAYS FOLLOWING THE DECAY OF SOME GOLD ISOTOPES
The energies of eight gamma rays occurring in the decay of some gold isotopes were determined from their conversion-line momenta as measured with an iron-free double focusing spectrometer. The B?-assignments to the lines following the decay of Au/sup 194/, Au/sup 196/, Au/sup 196/ ( 10 h) isomer and Au/sup 198/ were obtained by using the conversion lines of the l58 kev transition in Hg/sup 199/ as calibration line. Absolute B?values of the latter lines could be determined by applying the self-consistent method of Siegbahn. Disregarding the calibration uncertainty (about one part in 10/sup 4/) the accuracy reached in the energies of the gamma rays was about 7 parts in 10/sup 5/. The value 411.766 plus or minus 0.028 kev for the energy of the well known E2 transition in Hg/ sup 198/ was in nice agreement with other values, some of which were determined directly with a curved crystal. (auth)
- Research Organization:
- Inst. for Nuclear Research, Amsterdam
- NSA Number:
- NSA-15-000930
- OSTI ID:
- 4122518
- Journal Information:
- Nuclear Phys., Journal Name: Nuclear Phys. Vol. Vol: 18
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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