- The existence of two decaying isomers in 184Au was confirmed through direct observation of the variation of decay rates with time. The ordering of the low- and high-spin isomers was verified by the decay studies. The isomers are identified as a low-spin (probably 2+) state at an energy of 69 keV with a half-life of 48±1 sec and a high-spin (probably 5+) ground state with a half-life of 21±1 sec.
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Verification of isomerism and direct measurement of half-lives in Au-184
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