Plutonium-241 (Pu-241)

Identity

Protons

94

Neutrons

147

Mass number

241

Mass

241.1 ± 1.2 u

Mass excess

52.955 MeV

Spin

5/2+*

Stability

Half-life: 14.3 years

Natural occurrence

Not found in nature

Decays to

• beta minus 100.0 % → Am-241
• alpha 0.0024 % → U-237
• spontaneous fission 2.4e-14 %

Produced by

• Cm-245