SLOWING DOWN OF NEUTRONS

As mentioned earlier, neutrons are produced by fission at an average energy of about [___] MeV (indicate the correct value below).   Further, we know that [_____] energy neutrons are the most effective for causing fission, demonstrated in the table below (Stacey 2001, Table 1.3), as the value for σt rises at [_____] energy.

 

Value: 1

As mentioned earlier, neutrons are produced by fission at an average energy of about [___] MeV.

 
 
 

 

Value: 1

Further, we know that [_____] energy neutrons are the most effective for causing fission . . .

 
 

 

Value: 1

. . . as the value for σt rises at [_____] energy.

 
 

SpectrumAveraged.png

Since neutrons are produced by fission at [_____] energy and are most effective in causing fission at [_____] energy, an important process in a reactor is the [___ ___] of neutrons.   This can be accomplished through scattering collisions where the energy of the neutron is progressively reduced. The process to slow down fast neutrons is known as [_____]. Select the correct terms below.

 

Value: 3

Since neutrons are produced by fission at [_____] energy and are most effective in causing fission at [_____] energy, an important process in a reactor is the [___ ___] of neutrons. Select the correct combination of terms below.

 
 
 
 

 

Value: 1

This can be accomplished through scattering collisions where the energy of the neutron is progressively reduced. The process to slow down fast neutrons is known as [_____]. Select the correct term below

 
 
 

 


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