
TY  - JOUR
A1  - Giovanelli, RG 
T1  - Excitation of Hydrogen and Ca II Under Chromospheric Conditions
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1967
VL  - 20
IS  - 1
SP  - 81
EP  - 100
KW  - 
UR  - https://doi.org/10.1071/PH670081 
N2  - Methods are described for calculating excitation conditions in a hot gas in the absence of local thermodynamic equilibrium, taking self-absorption into account, in the approximation that excitation is uniform throughout the medium. The equilibrium excited-state populations and the emission, attenuation, and scattering properties derived from them are tabulated for a variety of physical conditions appropriate to the -solar chromosphere (7500 < T < 50000oK; 1010 < N e < 1012 cm-3) for some of the main spectral lines of hydrogen and CalI. 
ER  -

