Isotopes of plutonium
Pu-240, Pu-241 and Pu-242

Isotopes of plutonium

Section Title: Pu-240, Pu-241 and Pu-242
Table Section Text: None

Isotope	Thermal neutron cross section (barns)	Decay Mode	Half-life

Capture	Fission

238U	2.683	0.000	α	4.468 x 109 years

239U	20.57	14.11	β	23.45 minutes

239Np	77.03	–	β	2.356 days

239Pu	270.7	747.9	α	24,110 years

240Pu	287.5	0.064	α	6,561 years

241Pu	363.0	1012	β	14.325 years

242Pu	19.16	0.001	α	373,300 years

Sentence(s)

Pu-242, with a half-life of 373,300 years, and Pu-239, with a half-life of 24,110 years.

final_sentence: Pu-242, with a half-life of 373,300 years, and Pu-239, with a half-life of 24,110 years.