63-EU-140
Atomic Mass Mass Excess
139.928083261992 amu -66.99 MeV

Level energy (MeV) Spin & parity Half-life Mode of decay Branch ratio (%) Decay energy (MeV)
Ground state 1+ 1.51 S 0.02 EC 100 8.47
.185 (5-) 125 MS 2 IT 100 .185
.185 (5-) 125 MS 2 EC <1.00 8.655

Strong Gamma-rays from Decay of EU-140

Decay mode Half-life Gamma-ray energy (keV) Intensity (%)
EC 1.51 S 0.02 459.90 3.19+- 0.24
EC 1.51 S 0.02 531.00 29.+- 3.
EC 1.51 S 0.02 608.60 0.55+- 0.06
EC 1.51 S 0.02 1068.00 3.2+- 0.4
EC 1.51 S 0.02 1097.70 0.58+- 0.09
EC 1.51 S 0.02 1491.30 0.61+- 0.09
EC 1.51 S 0.02 1752.80 0.55+- 0.09
EC 1.51 S 0.02 2064.9 0.93+- 0.18