Abstract
The results of measurements of the gamma-ray and conversion-electron singles and coincidence spectra from the decay of the 122 s121m Cs and the 155 s121g Cs to levels of121Xe are reported. TheM 3 multipolarity of the 68.5 keV isomeric transition in121Cs has been deduced. Numerous low-lying levels below 1.6 MeV excitation energy are found. A negative-parity level at 355.9 keV is observed for the first time. The results supplement the low lying energy level systematics in odd-A xenons. A comparison is made with theN=67 barium isotone.
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