Calculations on the temperature sensitive intensity ratio of the he-ii 4686 a line and its neighbouring continuum
Calculations on the temperature sensitive intensity ratio of the he-ii 4686 a line and its neighbouring continuum
H.R. Griem provides the calculation of this intensity ratio from 80 000° K to higher temperatures. The present calculation extends the method to lower temperatures,where the continua of both the neutral and ionized atoms have to be considered. In this low temperature domain the temperature sensitivi...
Saved in:
Personal Name(s): | Berg, H. F. |
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Tondello, G. | |
Contributing Institute: |
Publikationen vor 2000; PRE-2000; Retrocat |
Imprint: |
Jülich
Kernforschungsanlage Jülich, Verlag
1964
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Physical Description: |
8 p. |
Document Type: |
Report Book |
Research Program: |
ohne Topic |
Series Title: |
Berichte der Kernforschungsanlage Jülich
182 |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
H.R. Griem provides the calculation of this intensity ratio from 80 000° K to higher temperatures. The present calculation extends the method to lower temperatures,where the continua of both the neutral and ionized atoms have to be considered. In this low temperature domain the temperature sensitivity of the intensity ratio is much increased over that ofthe high temperature range. The absolute intensities of the continua due to the neutral and ionized atoms are presented separatly. Finally the intensity ratio of the He II-4686 A line and its neighbouring continuum is plotted and taken out to higher temperatures sufficiently to provide someoverlapping points with Griem's calculation. Deviations in the states of the ionized atom from the thermal population were considered. For the partition function cutoff the reduced ionization potential from Unsöld's formula was used. |