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VI/142 Hydrogen emission & recombination coefficients - SS2 (Storey+, 2014)
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Emission and recombination coefficients for hydrogen with kappa-distributed
electron energies.
Storey P.J., Sochi T.
<Mon. Not. R. Astron. Soc. 446, 1864 (2015)>
=2015MNRAS.446.1864S
=2014yCat.6142....0S
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ADC_Keywords: Atomic physics
Keywords: hydrogen - atomic transitions - atomic spectroscopy -
emission coefficients - recombination coefficients -
total recombination coefficients - hydrogen two-photon emission -
hydrogen 2s state - planetary nebulae - nebular physics -
kappa electron energy distribution
Abstract:
This list provides an extensive data set for the emission and total
recombination coefficients of hydrogen and total recombination
coefficients to the 2s two-photon transitions with a kappa electron
energy distribution rather than the more traditional Maxwell-Boltzmann
distribution. The data are mainly relevant to thin and relatively cold
plasma found in planetary nebulae and HII regions. The data set is
complementary to previous data sets provided by Hummer and Storey [1]
and Storey and Hummer [2,3] under a Maxwell-Boltzmann distribution
assumption based on thermodynamic equilibrium. The data set is
structured as a function of electron number density, temperature and
kappa. An interactive fortran 77 and C++ data servers are also
provided as an accessory to probe the data and obtain
Lagrange-interpolated values in all three variables between the
explicitly given values.
Description:
The data set consists of two files: e1bk.d and t1bk.d. The first file
contains emission coefficients of hydrogen in units of erg.cm^3^/s
as a function of electron density (N_e_), temperature (T_e_) and kappa.
The second file named 't1bk.d' contains the hydrogen total
recombination coefficients in Case B and the total recombination
coefficients to the 2s state of hydrogen in units of cm^3^/s as
a function of N_e_, T_e_ and kappa.