The D3 emission of prominences
Abstract
The computed emission of H and D3 from an isothermal slab model prominence is shown to give agreement with observational data of Bruck and Moss when the model has helium abundance one fifth that of hyd gen, thickness z X I0 km, temperature between X 1o deg. K and 2.0 X I0 deg. K and electron concentration between 1010 cm-3 to 5 X 1010 . Some evidence has been found that the higher temperatures are generally associated with lower electron concentrations. Comparison of the present computations with earlier results obtained by the author from an analysis of the contour of the H emission of prominences shows that the ratio of the abundances of helium and hydrogen atoms in solar prominences lies in the range to 04. As for H , the self emission in D3 is generally small compared with the diffusely reflected and transmitted component.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- 1956
- DOI:
- 10.1093/mnras/116.6.629
- Bibcode:
- 1956MNRAS.116..629J