The Balmer jump in astrophysical hydrogen plasmas

Details The Balmer jump in astrophysical hydrogen plasmas The Balmer jump in astrophysical hydrogen plasmas

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995soph..156...65k&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 156, no. 1, p. 65-71

Physics

2

Balmer Series, H Lines, Hydrogen Plasma, Line Spectra, Solar Physics, Solar Wind, Sun, Continuous Spectra, Doppler Effect, Homogeneity, Stark Effect

Scientific paper

It is shown that, according to accepted theoretical concepts, there should be no intensity jump at the edge of the Balmer continuum, nor at that of other hydrogen series. We point out three reasons for a fairly smooth increase of the intensity to occur at the continuum edge. As a result, `the jump' sometimes spreads over hundreds of angstroms, due mainly to the electron density inhomogeneity of solar plasma. Furthermore, the Doppler and Stark effects also give rise to a considerable spread of the series edge. We point out that excess continuum emission over a relatively narrow spectral interval before the continuum edge can result from overlapping of line wings.

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