Semenov's Parameter

Semenov's parameter is related to the critical temperature, ie at critical temperature the value of T will be denoted by T_c. When this is put into equation 3 it results in the following equation.

Also from equation 4, the following approximations can be made.

Which results in

If this result is now put into equation 5, it will give to leading order and at criticality the following is true.

The Semenov parameter is defined as.

Combining equation 6 and equation 7 it can be shown that at criticality Semenov's parameter is therefore defined as.