55-CS-137
Atomic Mass Mass Excess
136.907083660378 amu -86.551 MeV

Level energy (MeV) Spin & parity Half-life Mode of decay Branch ratio (%) Decay energy (MeV)
Ground state 7/2+ 30.07 Y 0.03 B- 100 1.176

Strong Gamma-rays from Decay of CS-137

Decay mode Half-life Gamma-ray energy (keV) Intensity (%)
B- 30.07 Y 0.03 661.657 85.10+- 0.20