
TY  - JOUR
A1  - Vardavas, IM 
A1  - Cannon, CJ 
T1  - The Effect of Velocity Gradients on Multi-level Atom Non-LTE Line Source Functions
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1974
VL  - 27
IS  - 2
SP  - 157
EP  - 168
KW  - 
UR  - https://doi.org/10.1071/PH740157 
N2  - Macroscopic velocity gradients are featured in calculations of several different line source functions for a model multi-level atom in non-LTE. The physical processes giving rise to these source functions, and their corresponding line profiles, are discussed in detail. In particular, three quite distinct coupling mechanisms between the various levels in the atom are considered and the results so obtained enable an easy interpretation of non-LTE line source functions to be made for any multilevel atom. 
ER  -

