55-CS-139
Atomic Mass Mass Excess
138.913357453734 amu -80.707 MeV

Level energy (MeV) Spin & parity Half-life Mode of decay Branch ratio (%) Decay energy (MeV)
Ground state 7/2+ 9.27 M 0.05 B- 100 4.213

Strong Gamma-rays from Decay of CS-139

Decay mode Half-life Gamma-ray energy (keV) Intensity (%)
B- 9.27 M 0.05 627.24 1.8+- 0.7
B- 9.27 M 0.05 1283.23 8.+- 4.
B- 9.27 M 0.05 1420.66 0.9+- 0.4
B- 9.27 M 0.05 1680.72 0.7+- 0.3
B- 9.27 M 0.05 2110.91 0.8+- 0.3
B- 9.27 M 0.05 2349.92 0.64+- 0.25