Talk:Criticality (nuclear): Difference between revisions

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imported>Dmitrii Kouznetsov
imported>Henry A. Padleckas
(initial response to comment)
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[[User:Dmitrii Kouznetsov|Dmitrii Kouznetsov]] 15:42, 25 November 2012 (UTC)
[[User:Dmitrii Kouznetsov|Dmitrii Kouznetsov]] 15:42, 25 November 2012 (UTC)
:I'm not finished writing this article.  Perhaps I should have started this on User subpage of mine then moved to a main article page.  I plan to rewrite the "section" I just removed.  I could write it in terms of reactivity, symbolized by &delta; or &rho;, or in terms of effective neutron multiplication factor, symbolized by K<sub>eff</sub>.  They are related quantities.  I'll think about this when I have some time.  [[User:Henry A. Padleckas|Henry A. Padleckas]] 17:56, 26 November 2012 (UTC)

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 Definition In a nuclear fission chain reaction, the mean number of neutrons produced by a nuclear fission (by one neutron) which cause another fission: (probability to crack a nucleus)*(mean number of neutrons produced by a single fission) [d] [e]
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Spontaneous decay and the neutron scatterers

1. How about to add some refs? for ex.,
http://mitnse.com/2011/03/18/what-is-criticality/
http://www.ornl.gov/~webworks/cppr/y2001/pres/112885.pdf

2. I think, the role of the neutron scatterers should be discussed.
How about to surround the core with some boron, or, contrary, with some beryllium?
Can it be used to control the fission instead of the conventional control rods?

3. How about to trace the role of the spontaneous decay? for example, if the criticality is slightly below unity, but the stimulated reactions converts each spontaneous neutron to, say, a million of neutrons that get out. In such a condition, the core should show huge fluctuation in generation of energy. There is analogy in optics, it is called "amplified spontaneous emission".

Dmitrii Kouznetsov 15:42, 25 November 2012 (UTC)

I'm not finished writing this article. Perhaps I should have started this on User subpage of mine then moved to a main article page. I plan to rewrite the "section" I just removed. I could write it in terms of reactivity, symbolized by δ or ρ, or in terms of effective neutron multiplication factor, symbolized by Keff. They are related quantities. I'll think about this when I have some time. Henry A. Padleckas 17:56, 26 November 2012 (UTC)