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| ==Untitled== | |||
| Article changed over to new ] format by ], ], and ] 15:40 Feb 28, 2003 (UTC). Elementbox converted 10:26, 17 July 2005 by ] (previous revision was that of ). | Article changed over to new ] format by ], ], and ] 15:40 Feb 28, 2003 (UTC). Elementbox converted 10:26, 17 July 2005 by ] (previous revision was that of ). 07:26, 13 July 2005 | ||
| == Information Sources == | |||
| Some of the text in this entry was rewritten from . Additional text was taken directly from ), Webster's Revised Unabridged Dictionary (1913) (via ) and WordNet (r) 1.7 (via ). Data for the table was obtained from the sources listed on the subject page and ] but was reformatted and converted into ] units. | Some of the text in this entry was rewritten from . Additional text was taken directly from ), Webster's Revised Unabridged Dictionary (1913) (via ) and WordNet (r) 1.7 (via ). Data for the table was obtained from the sources listed on the subject page and ] but was reformatted and converted into ] units. | ||
| === Talk === | |||
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| == ] == | |||
| An ] has some possible wiki link suggestions for the ] article, and they have been placed on ] for your convenience.<br />''Tip:'' Some people find it helpful if these suggestions are shown on this talk page, rather than on another page. To do this, just add <nowiki>{{User:LinkBot/suggestions/Actinium}}</nowiki> to this page. — ] 10:36, 17 Dec 2004 (UTC) | |||
| == Hypothetical Application of Actinium == | == Hypothetical Application of Actinium == | ||
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| Actually, the energy emmitted per gram of actinium in equilibrum can be calculated to be approximatly 10 watts per gram with improved data, but this is still approximate and uncertain. | Actually, the energy emmitted per gram of actinium in equilibrum can be calculated to be approximatly 10 watts per gram with improved data, but this is still approximate and uncertain. | ||
| <!-- Template:Unsigned --><small class="autosigned">— Preceding ] comment added by ] (] • ]) </small> | |||
| == |
== Newer review ref == | ||
| The article states, "Actinium-227 is extremely radioactive, and in terms of its potential for radiation induced health effects, actinium-227 is about as dangerous as plutonium. Ingesting even small amounts of actinium-227 would represent a serious health hazard." In fact (not accounting for decay products) Ac 227 is 28400year / 21.7year = 1309 times more radioactive than plutonium 239. Also, its decay products are short lived (the longest is 18 days, much less than the 7*10^8 year half life of plutonium 239). Plutonium 239 emits alpha rays, but Ac 227 and decay products emit alpha, beta, and gamma (?) rays. For this reason, actinium 227 is more dangerous (for the same quantity) than plutonium 239. | |||
| 01:01, 8 January 2006 (UTC)] | |||
| == half-life of Ac-227: 21.772 or 21.773 years? == | |||
| The article contains these two different figures. ] (]) 06:00, 27 May 2010 (UTC) | |||
| :They are very much the same to me, because the measurement accuracy is never that good. ] (]) 06:19, 27 May 2010 (UTC) | |||
| ::May just be a typo. I'll fix it. --] (]) 22:10, 5 December 2011 (UTC) | |||
| ::Fixed. --] (]) 22:12, 5 December 2011 (UTC) | |||
| If you want to convert the above data into more useful information, you can say that the isotope OE89Ac227 has a base 10 log halflife of 10E6^8.839 seconds and consists of 89 pairs of deuterons plus 49 extra neutrons with 14 of the deuteron pairs having been converted into 7 alpha particles. It is, of course, the first element of the 14 element (14 I say 14!) actinide series, and accordingly should be a cogener of 57La lanthanum. It falls on the stability trend line A = 3Z - 40, and into the 4n + 3 (uranium-actinium series) 0f radioactive materials.] (]) 04:34, 15 April 2012 (UTC) | |||
| == File:Actinium_RSC.jpg is used here? == | |||
| If it is, I can't find it here. DASHBot can be so annoying. ] (]) 13:14, 3 March 2011 (UTC) | |||
| This review available through the wikipedia library, might be useful: | |||
| {{Talk:Actinium/GA1}} | |||
| * {{Cite book |last=Kirby |first=H. W. |url=http://link.springer.com/10.1007/978-94-007-0211-0_2 |title=Actinium |last2=Morss |first2=Lester R. |date=2010 |publisher=Springer Netherlands |isbn=978-94-007-0210-3 |editor-last=Morss |editor-first=Lester R. |location=Dordrecht |pages=18–51 |language=en |doi=10.1007/978-94-007-0211-0_2 |editor-last2=Edelstein |editor-first2=Norman M. |editor-last3=Fuger |editor-first3=Jean}} | |||
| ] (]) 20:34, 14 April 2024 (UTC) | |||
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Untitled
Article changed over to new Misplaced Pages:WikiProject_Elements format by Mav, Mkweise, and Dwmyers 15:40 Feb 28, 2003 (UTC). Elementbox converted 10:26, 17 July 2005 by Femto (previous revision was that of 07:26, 13 July 2005). 07:26, 13 July 2005
Information Sources
Some of the text in this entry was rewritten from Los Alamos National Laboratory - Actinium. Additional text was taken directly from USGS Actinium Statistics and Information, from the Elements database 20001107 (via [http://www.dict.org dict.org), Webster's Revised Unabridged Dictionary (1913) (via dict.org) and WordNet (r) 1.7 (via dict.org). Data for the table was obtained from the sources listed on the subject page and Misplaced Pages:WikiProject_Elements but was reformatted and converted into SI units.
Hypothetical Application of Actinium
In principle, actinium 227 could be used as a source of thermoelectric power. It has a half life of 21.773 years and emits approximatly 56 J/s per gram of actinium 227 (this calculated energy release takes into account decay produts at equlibrum, assumes no gamma rays, assumes all alpha rays emmited have the same energy, and that all beta rays emitted have the same energy).
Actually, the energy emmitted per gram of actinium in equilibrum can be calculated to be approximatly 10 watts per gram with improved data, but this is still approximate and uncertain. — Preceding unsigned comment added by 24.103.109.9 (talk • contribs)
Newer review ref
This review available through the wikipedia library, might be useful:
- Kirby, H. W.; Morss, Lester R. (2010). Morss, Lester R.; Edelstein, Norman M.; Fuger, Jean (eds.). Actinium. Dordrecht: Springer Netherlands. pp. 18–51. doi:10.1007/978-94-007-0211-0_2. ISBN 978-94-007-0210-3.
Johnjbarton (talk) 20:34, 14 April 2024 (UTC)
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