- #1
oksuz_
- 70
- 3
Hi
Point kinetics equation with one-group delayed neutrons,
dn/dt= ((ρ-β)/∧)n+λC
dC/dt= (β/Λ)n - λC
When a reactor in steady-state operation, derivative terms would be zero. From second equation,
C/n= β/λΛ is found. For given β=0.0065, λ=0.08 and Λ=0.0001, the ratio of the steady state delayed neutron concentration to the total neutron is found about 812.5. So, what I do not understand is that the delayed neutrons is just a small fraction of the total neutrons (around 1%). How come the ratio becomes 812.5 ? Am I missing something?
Thank you ..
Point kinetics equation with one-group delayed neutrons,
dn/dt= ((ρ-β)/∧)n+λC
dC/dt= (β/Λ)n - λC
When a reactor in steady-state operation, derivative terms would be zero. From second equation,
C/n= β/λΛ is found. For given β=0.0065, λ=0.08 and Λ=0.0001, the ratio of the steady state delayed neutron concentration to the total neutron is found about 812.5. So, what I do not understand is that the delayed neutrons is just a small fraction of the total neutrons (around 1%). How come the ratio becomes 812.5 ? Am I missing something?
Thank you ..