Measurement and Calculation of the Stark-Broadening Parameters for the Resonance Lines of Singly Ionized Beryllium
Abstract
The electron-impact-broadened profile of the resonance doublet of singly ionized beryllium (2s-2p, λ=3130.4 and 3131.1 Å) has been measured using an electromagnetically driven shock tube and a rapid-scanning Fabry-Perot spectrometer. For the conditions Ne=1017 cm-3 and T = 19 000°K, we found the Lorentz half-width of each line in the doublet to be 0.035 Å +/- 15%. For comparison with theory, we did both a quantum-mechanical (using the close-coupling method) and a semiclassical calculation, obtaining the values 0.015 and 0.042 Å, respectively. Possible reasons for the discrepancy are discussed.
- Publication:
-
Physical Review A
- Pub Date:
- August 1973
- DOI:
- 10.1103/PhysRevA.8.774
- Bibcode:
- 1973PhRvA...8..774S