Promethium-144 (Pm-144)

Identity

Protons

61

Neutrons

83

Mass number

144

Mass

143.9 ± 3.1 u

Mass excess

-81.416 MeV

Spin

5-

Stability

Half-life: 363 days

Natural occurrence

Not found in nature

Decays to

• electron capture 100.0 % → Nd-144
• positron emission 0.000080 % → Nd-144

Produced by

• Eu-148