| Autor: |
Bengtsson, G. J, Berzinsh, U, Larsson, Jörgen, Svanberg, Sune |
| Jazyk: |
angličtina |
| Rok vydání: |
1992 |
| Předmět: |
|
| Zdroj: |
Astronomy & Astrophysics; 263(1-2), pp 440-442 (1992) |
| ISSN: |
0004-6361 |
| Popis: |
Inspired by the recent Hubble Space Telescope first observations of arsenic in an astrophysical object we have determined the natural radiative lifetime of the upper states of two of the three resonance lines of As I. Short pulse laser excitation at 193.7 and 197.2 nm was achieved using different non-linear optical mixing schemes. Using time-resolved spectroscopy we obtain tau(4p(2)5s P-4(3/2))=4.3(5) ns and T(4p(2)5s P-4(1/2)=4.5(5)ns yielding the absorption oscillator strengths f(abs)(193.7 nm) =0.123 (17) and f(abs)(1 97.2 nm)=0.059(8). |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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