Let

(A.24) 
In the following,
all quantities that are of order
,
, or smaller, are neglected with respect to unity.
The dimensionless ion collisional friction force matrices,
,
,
, and
, are defined to have the following elements (see Section 2.16) [7,9]:


(A.25) 


(A.26) 


(A.27) 


(A.28) 


(A.29) 


(A.30) 


(A.31) 


(A.32) 


(A.33) 


(A.34) 


(A.35) 


(A.36) 


(A.37) 


(A.38) 


(A.39) 


(A.40) 
The dimensionless electron collisional friction force matrices,
,
, and
are defined to have the following elements (see Section 2.16) [7,9]:


(A.41) 


(A.42) 


(A.43) 


(A.44) 


(A.45) 


(A.46) 


(A.47) 


(A.48) 


(A.49) 


(A.50) 


(A.51) 


(A.52) 