Identification of ${}^{94}{Kr}$ and ${}^{143}{Xe}$ , and Measurement of $γ$ -Ray Spectra and Half-Lives of Nuclides in the Mass Chains 93, 94, and 143

Fission-produced nuclides

{}^{94}{Kr}

and

{}^{143}{Xe}

have been measured directly using on-line mass separation. The half-lives derived from the

β

-decay curve are 0.20 ± 0.01 and 0.3 ± 0.03 sec, respectively.

γ

-ray spectra in the mass chain 93 have been measured and various

γ

peaks were assigned to the individual nuclides.

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Identification ofKr94andXe143, and Measurement ofγ-Ray Spectra and Half-Lives of Nuclides in the Mass Chains 93, 94, and 143