Very interesting link too, I'm just reading it. Are you based in the Netherlands by any chance?
Sent from my iPad > On 20 mei 2016, at 23:40, mix...@bigpond.com wrote: > > In reply to Stephen Cooke's message of Fri, 20 May 2016 12:04:22 +0200: > Hi, > [snip] >> Is there a relationship between the cross-section for slow neutron capture >> in particular nuclei and the nucleus excitation energy needed in the nucleus >> to cause neutron spallation? >> >> For example B10 has a high neutron cross-section. Is there s relationship >> between this and the energy needed for Neutron spallation from B11? > > That's what I would expect too. Nuclei with a high neutron capture > cross-section > really "want" to have that extra neutron, because they become much more > stable. > Conversely, removing the neutron from the new stable nucleus should be very > difficult. > Compare the neutron capture energy release with that of other nuclei. I would > expect it to be larger. > > In this case, 10B+n => 11B + 11.454 MeV > > (That's a lot for a single particle capture reaction). > > Another high capture cross-section reaction is:- > > 3He+n => 4He + 20.578 MeV > > which is why He3 is used in some neutron detectors. > > Regards, > > Robin van Spaandonk > > http://rvanspaa.freehostia.com/project.html >
