Hypersatellite and satellite transitions in cobalt

An accurate measurement of energy shifts and relative intensities of hypers atellite and satellite transitions in cobalt have been made. The use of rad ioactive Ni-59, which decays mostly by the nuclear K-electron capture to co balt and the low-probability processes of ejection of the other K-electron allowed the observation of decays among very pure double inner-shell-hole s tates. The measurements were made using a pair of high-purity germanium det ectors in conjunction with a fast-slow coincidence system and a 128 x 512 x 512-channel three-parameter pulse-height analyzer. The results for the hyp ersatellite shifts are Delta (K alpha (h)) = 274.9 +/- 1.6 eV and Delta (K beta (h)) = 354.5 +/- 4.6 eV, and for the satellite shifts Delta (K alpha ( s) L-1) = 25.1 +/- 1.4 eV, Delta (K beta (s) L-1) = 39.1 +/- 4.8 eV and Del ta (K alpha (s) M-1) = 8.8 +/- 4.2 eV. The results for the intensity ratios are I(K beta (h))/K alpha (h)) = 0.119 +/- 0.006, I(K beta (s) L-1)/I(K al pha (s) L-1) = 0.114 +/- 0.007, and I(K beta (s) M-1)/I(K alpha (s) M-1 = 0 .092 +/- 0.023. Present results and the available results of earlier work a re compared. (C) 2001 Published by Elsevier Science B.V.