
#1
Mar512, 09:22 PM

P: 5

hi every body, i'm working and calculating the keff, and total fission produced in critical accident in the cylindrical model. If critical mass is roached.
I calculated variable multiply coefficient (keff) by MCNP 5. also total fission produced i don't know how to calculate this variable, I really need your help. thanks you very much for your help. 



#2
Mar612, 07:47 AM

P: 71





#3
Mar612, 08:27 AM

Admin
P: 21,637





#4
Mar2112, 11:46 PM

P: 5

hi every body, i'm working and calculating the keff, and [B]totaland could you show me about Ʃ_{f} clearly, eg i want to calculate with thermal neutron(E < 6.625e7 MeV), and fission cause of U235. how is Ʃ_{f}? Thanks you ! 



#5
Mar2212, 01:24 PM

Admin
P: 21,637

Ʃ_{f }= N_{U235} * σ_{f} and N is the atomic density of the material. 



#6
Mar2612, 11:13 PM

P: 5

Solution : UO2(NO3)2 . 6 H2O. 



#7
Mar2712, 07:02 AM

Admin
P: 21,637

Otherwise, http://www.nndc.bnl.gov/sigma/index....dfb7.1&nsub=10  and find (n,total fission). There will be no delayed neutrons. 



#8
Mar3012, 02:38 AM

P: 5




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