101-MD-257
Atomic Mass Mass Excess
257.095534714365 amu 88.990 MeV

Level energy (MeV) Spin & parity Half-life Mode of decay Branch ratio (%) Decay energy (MeV)
Ground state (7/2-) 5.52 H 0.05 EC 85 0
Ground state (7/2-) 5.52 H 0.05 A 15 7.558
Ground state (7/2-) 5.52 H 0.05 SF <1.00 0

Strong Gamma-rays from Decay of MD-257

Decay mode Half-life Gamma-ray energy (keV) Intensity (%)
A 5.52 H 0.05 325.10 2.5+- 0.6
A 5.52 H 0.05 371.40 11.7+- 2.5