Isotopes of plutonium
Actinides vs fission products

Isotopes of plutonium

Section Title: Actinides vs fission products
Table Section Text: None

Actinides and fission products by half-life vte

Actinides by decay chain	Half-life range (y)	Fission products of 235U by yield

4n	4n+1	4n+2	4n+3

4.5–7%	0.04–1.25%	<0.001%

228Ra№	4–6	†	155Euþ

244Cmƒ	241Puƒ	250Cf	227Ac№	10–29	90Sr	85Kr	113mCdþ

232Uƒ	238Puƒ	243Cmƒ	29–97	137Cs	151Smþ	121mSn

248Bk	249Cfƒ	242mAmƒ	141–351	No fission products have a half-life in the range of 100–210 k years ...

241Amƒ	251Cfƒ	430–900

226Ra№	247Bk	1.3 k – 1.6 k

240Pu	229Th	246Cmƒ	243Amƒ	4.7 k – 7.4 k

245Cmƒ	250Cm	8.3 k – 8.5 k

239Puƒ	24.1 k

230Th№	231Pa№	32 k – 76 k

236Npƒ	233Uƒ	234U№	150 k – 250 k	‡	99Tc₡	126Sn

248Cm	242Pu	327 k – 375 k	79Se₡

1.53 M	93Zr

237Npƒ	2.1 M – 6.5 M	135Cs₡	107Pd

236U	247Cmƒ	15 M – 24 M	129I₡

244Pu№	80 M	... nor beyond 15.7 M years

232Th№	238U№	235Uƒ№	0.7 G – 14.1 G

Legend for superscript symbols ₡ has thermal neutron capture cross section in the range of 8–50 barns ƒ fissile m metastable isomer № primarily a naturally occurring radioactive material (NORM) þ neutron poison (thermal neutron capture cross section greater than 3k barns) † range 4–97 y: Medium-lived fission product ‡ over 200,000 y: Long-lived fission product

Sentence(s)

Plutonium-239 has a half-life of 24,100 years.

final_sentence: Plutonium-239 has a half-life of 24,100 years.