Difference between revisions of "Template:Actinides vs fission products"

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blackwiki>DocWatson42
m (Performed minor clean up on punctuation.)
blackwiki>DocWatson42
m (Performed minor clean up on punctuation.)
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!
 
!
 
!
 
!
! style="text-align:center; background:#e8e8e8; " | 4 – 6
+
! style="text-align:center; background:#e8e8e8; " | 4–6
 
| rowspan=3 style="vertical-align:top; border-left:1px solid black; padding:1px 0 1px 1px;" | †
 
| rowspan=3 style="vertical-align:top; border-left:1px solid black; padding:1px 0 1px 1px;" | †
 
|
 
|
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| {{Iso1|[[Uranium-234|234]]|U<sup>№</sup>|5}}
 
| {{Iso1|[[Uranium-234|234]]|U<sup>№</sup>|5}}
 
|
 
|
! class="nowrap" style="text-align:center; background:#e8e8e8;" | 150k&nbsp;–&nbsp;250k
+
! class="nowrap" style="text-align:center; background:#e8e8e8;" | 150k–250k
 
| rowspan="5" style="vertical-align:top; border-left:1px solid black; padding:2ex 0 1px 1px;" | ‡
 
| rowspan="5" style="vertical-align:top; border-left:1px solid black; padding:2ex 0 1px 1px;" | ‡
 
| {{Iso1|[[Technetium-99|99]]|Tc<sup>₡</sup>|5}}
 
| {{Iso1|[[Technetium-99|99]]|Tc<sup>₡</sup>|5}}
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| {{Iso1|[[Plutonium-242|242]]|Pu|5}}
 
| {{Iso1|[[Plutonium-242|242]]|Pu|5}}
 
|
 
|
! style="text-align:center; background:#e8e8e8;" | 327k&nbsp;–&nbsp;375k
+
! style="text-align:center; background:#e8e8e8;" | 327k–375k
 
|
 
|
 
| {{Iso1|[[Selenium-79|79]]|Se<sup>₡</sup>|5}}
 
| {{Iso1|[[Selenium-79|79]]|Se<sup>₡</sup>|5}}
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! style="text-align:center; background:#e8e8e8;" | 80M
 
! style="text-align:center; background:#e8e8e8;" | 80M
 
| colspan="4" rowspan="2" align="center" bgcolor=#ffffdd style="border-width:1px; border-style:dashed" |
 
| colspan="4" rowspan="2" align="center" bgcolor=#ffffdd style="border-width:1px; border-style:dashed" |
...nor beyond 15.7M<ref>Excluding those '[[Primordial nuclide|classically stable]]' isotopes with half-lives significantly in excess of <sup>232</sup>Th, e.g. while <sup>113m</sup>Cd has a half-life of only fourteen years, that of <sup>113</sup>Cd is nearly eight [[Orders of magnitude (numbers)#1015|quadrillion]].</ref>
+
...nor beyond 15.7M<ref>Excluding those "[[Primordial nuclide|classically stable]]" isotopes with half-lives significantly in excess of <sup>232</sup>Th, e.g. while <sup>113m</sup>Cd has a half-life of only fourteen years, that of <sup>113</sup>Cd is nearly eight [[Orders of magnitude (numbers)#1015|quadrillion]].</ref>
 
|-
 
|-
 
| {{Iso1|[[Thorium-232|232]]|Th<sup>№</sup>|9}}
 
| {{Iso1|[[Thorium-232|232]]|Th<sup>№</sup>|9}}
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№&nbsp; [[naturally occurring radioactive material]] (NORM)<br/>
 
№&nbsp; [[naturally occurring radioactive material]] (NORM)<br/>
 
þ&nbsp; [[Neutron poison|neutron poison]] (thermal neutron capture cross section greater than 3k barns)<br/>
 
þ&nbsp; [[Neutron poison|neutron poison]] (thermal neutron capture cross section greater than 3k barns)<br/>
<nowiki>†</nowiki>&nbsp; range 4a&nbsp;&ndash; 97a: [[Medium-lived fission product]]<br/>
+
<nowiki>†</nowiki>&nbsp; range 4a–97a: [[Medium-lived fission product]]<br/>
 
<nowiki>‡</nowiki>&nbsp; over 200ka: [[Long-lived fission product]]
 
<nowiki>‡</nowiki>&nbsp; over 200ka: [[Long-lived fission product]]
 
|}<noinclude>
 
|}<noinclude>

Revision as of 04:30, 30 October 2013

Actinides and fission products by half-life
Actinides[1] by decay chain Half-life
range (a)
Fission products by yield[2]
4n 4n+1 4n+2 4n+3
4.5–7% 0.04–1.25% <0.001%
228Ra 4–6 155Euþ
244Cm 241Puƒ 250Cf 227Ac 10–29 90Sr 85Kr 113mCdþ
232Uƒ 238Pu 243Cmƒ 29–97 137Cs 151Smþ 121mSn
249Cfƒ 242mAmƒ 141–351

No fission products
have a half-life
in the range of
100–210k years…

241Am 251Cfƒ[3] 430–900
226Ra 247Bk 1.3k–1.6k
240Pu 229Th 246Cm 243Am 4.7k–7.4k
245Cmƒ 250Cm 8.3k–8.5k
239Puƒ 24.1k
230Th 231Pa 32k–76k
236Npƒ 233Uƒ 234U 150k–250k 99Tc 126Sn
248Cm 242Pu 327k–375k 79Se
1.53M 93Zr
237Np 2.1M–6.5M 135Cs 107Pd
236U 247Cmƒ 15M–24M 129I
244Pu 80M

...nor beyond 15.7M[4]

232Th 238U 235Uƒ№ 0.7G–14G

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

References

  1. Plus radium (element 88). While actually a sub-actinide, it immediately precedes actinium (89) and follows a three element gap of instability after polonium (84) where no isotopes have half-lives of at least four years (the longest-lived isotope in the gap is radon-222 with a half life of less than four days). Radium's longest lived isotope, at a notable 1600 years, thus merits the element's inclusion here.
  2. Specifically from thermal neutron fission of U-235, e.g. in a typical nuclear reactor.
  3. This is the heaviest isotope with a half-life of at least four years before the "Sea of Instability".
  4. Excluding those "classically stable" isotopes with half-lives significantly in excess of 232Th, e.g. while 113mCd has a half-life of only fourteen years, that of 113Cd is nearly eight quadrillion.
Template documentation[view] [edit] [history] [purge]

Usage

Background colors

Half-life color coding in {{Iso1}}
see also: title (mousehover text)
by letter code
example: Gd
- 145Gd < 1 day
V 146Gd 1–10 days
I 149Gd 10–100 days
B 153Gd 100 days–10 a
G 148Gd 10–10,000 a
Y 150Gd 10 ka–103 Ma
O 152Gd > 700 Ma
R 158Gd Stable
Used in:
by number code
0      1–10 years
1 10–100 years
2 100–1k years
3 1k–10k years
4 10k–100k years
5 100k–1M years
6 1M–10M years
7 10M–103M years
8 103M–700M years
9 700M–14G years
Used in:

See also