Relative Anfangsbesetzungszahlen der Zustände 2p und 3d folienangeregter Wasserstoffatome |
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Authors: | P. H. Heckmann H. H. Bukow R. Tielert |
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Affiliation: | 1. Institut für Experimentalphysik der Ruhr-Universit?t Bochum, Deutschland
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Abstract: | The Lyman-α radiation of fast moving hydrogen atoms excited by a thin carbon foil is measured using a channel electron multiplier with a Mg F2 filter. The photonintensity-versus-distance curve exhibits the 2p (1.596 ns) decay followed by a cascade tail originating mainly from the 3d level (15.47 ns). The data is analyzed by a computer program using the known mean lives of the 2p, 3d, and 3s states and yields the relative initial state populationY=N 2p 0 N 3 d 0 which depends on the kind of incident ions (H+ or H2 +). For H2 + ions, excited with a single foil, there might be a slight dependence ofY on the beam velocity, but for H+ ions incident on the foil, no such dependence is found. |
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