Absolute Transition Rates of Atomic Transitions of Copper, Silver, and Gold

In two previous papers the author has reported the measurement of the transition rates of the reso- nance lines of cadmium, zinc, copper, gold, and silver by an absorption technique. In the experiment discussed here a radioactive sample of Zn65 was used to measure the atomic rates for zinc and used again during several half-lives of the Zn65 nucleus. The transition rate for the daughter product Cu65 was then measured. The technique yields the absolute rate for Zn X 3076 to within a 30 per cent accuracy, but yields a Cu/Zn ratio to within an estimated accuracy of 15 per cent. The results are compared to those previously reported. I. INTRODUCTIO