User talk:Belromain
Welcome[edit]
Welcome!
Hello, Belromain, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are some pages that you might find helpful:
- The five pillars of Wikipedia
- Tutorial
- How to edit a page and How to develop articles
- How to create your first article (using the Article Wizard if you wish)
- Manual of Style
I hope you enjoy editing here and being a Wikipedian! Please sign your messages on discussion pages using four tildes (~~~~); this will automatically insert your username and the date. If you need help, check out Wikipedia:Questions, ask me on my talk page, or ask your question on this page and then place {{help me}} before the question. Again, welcome!
Polyamorph (talk) 07:56, 3 November 2011 (UTC)
Definition of neutron flux[edit]
Would you like to defend your definition at Talk:Neutron_flux?
--Sjjamsa (talk) 11:34, 2 January 2013 (UTC)
Cross-Sections of U238[edit]
Your table gives the capture cross-section for fast neutrons as 0.07barn and the fission cross-section as 0.3barn. Maybe my understanding of these values is wrong, but it seems to me that this would mean that U238 would fission with ~80% probability with fast neutrons, whereas elsewhere on Wikipedia I read 10%. The 10% number looks more plausible, because 80% would make it pretty likely that you can reach a critical mass with unmoderated U238. Is my understanding of cross-sections wrong, or are the cross-section numbers for U238 in the table wrong?
Anton Ertl (talk) 18:22, 16 December 2021 (UTC)