The generalised function of Chandrasekhar and von Neumanna Br(b) near the emitter, for plasmas consisting of electrons and two different ions:

  1. Br(b) for Ze=0, Zp1=1, Zp2=2, C=0.0, RT=1, [Download]

  2. Br(b) for Ze=0, Zp1=1, Zp2=2, C=1.0, RT=1, [Download]

  3. Br(b) for Ze=1, Zp1=1, Zp2=2, C=0.0, RT=1, [Download]

  4. Br(b) for Ze=1, Zp1=1, Zp2=2, C=1.0, RT=1, [Download]

The symbols are defined as follows:
Ze - charge number of the emitters,
Zp1, Zp2 - charge numbers of the ions,
Ne - concentration of the electrons,
Np1, Np2- concentrations of the ions,
Te - temperature of the electrons,
Ti - temperature of the ions,
C = Np2/(Np1 + Np2),
RT= Te/Ti,
b = F/F0, the electric microfield in the reduced scale,
F0 = e0/R02, so-called the normal field,
R0 - results from the relation (4/15)(2p)3/2R03Ne=1
D = (kT/4pe0Ne)1/2, the electronic Debye radius,
r = R0/D, the screening parameter.

The numerical calculation of the function Br(b) have been performed according to:

-J.Halenka"Asymmetry of Hydrogen Lines in Plasmas Utilizing a Statistical Description of Ion-Quadrupole Interaction in Mozer-Baranger Limit",Z.Phys.D-Atoms, Molecules and clusters, 1990, 16,1

-S.Günter, M.Strobbe, A.Könies, and J.Halenka, "Shift and width HeII lines", JQSRT, 1998, 60(4), 531;

for following values of the screening parameters r: 0.0, 0.2, 0.4, 0.6, 0.8