Is There a Neutron Equivalent of the Proton Activation Data File?

benpalmer
Messages
2
Reaction score
0
The proton activation data file/s contain the target and product data plus the cross sections at a range of energies, so the reaction rates can be calclated. The only neutron cross section data files I have found have just the overall cross sections. Are there any files available that give the cross sections for a range of energies for a range of different reactions? Cheers.
 
Physics news on Phys.org
Go to

http://www.nndc.bnl.gov/sigma/

Choose element, then choose isotope, then choose (n,total) or other cross section, and get a plot (preferred) or table of total coss section in barns (1 x 10-24 cm2) vs. neutron energy in eV.

Bob S
 
Hi Bob thatnks for the link I will check it out. I really need a datafile of all the reactions and cross sections so I can import them into a mysql database to use with a code I already have and one I should be getting. I will see if I can do a large data dump from that site though. Cheers.
 
Toponium is a hadron which is the bound state of a valance top quark and a valance antitop quark. Oversimplified presentations often state that top quarks don't form hadrons, because they decay to bottom quarks extremely rapidly after they are created, leaving no time to form a hadron. And, the vast majority of the time, this is true. But, the lifetime of a top quark is only an average lifetime. Sometimes it decays faster and sometimes it decays slower. In the highly improbable case that...
I'm following this paper by Kitaev on SL(2,R) representations and I'm having a problem in the normalization of the continuous eigenfunctions (eqs. (67)-(70)), which satisfy \langle f_s | f_{s'} \rangle = \int_{0}^{1} \frac{2}{(1-u)^2} f_s(u)^* f_{s'}(u) \, du. \tag{67} The singular contribution of the integral arises at the endpoint u=1 of the integral, and in the limit u \to 1, the function f_s(u) takes on the form f_s(u) \approx a_s (1-u)^{1/2 + i s} + a_s^* (1-u)^{1/2 - i s}. \tag{70}...
Back
Top