fix heat -formula used

Hi,
I am a new lammps user. i would like to know what formula we basically used to Add non-translational kinetic energy (heat) to a group of atoms in fix heat command.




1.Is it E=(ke+ ΔE-1/2mv2 )/(ke-1/2mv2)…?


1(a).if so what is that (ke-1/2mv2) really meant though both represent kinetic energy
1(b).what is ke and what is 1/2mv2?
2. Any velocity re scaling is done in this command?..if so what formula was used.?


any help is greatly appreciated
regards
ragesh


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Heat and translational KE are the same, and yes
the formula is E = 1/2 m v^2.

Steve