Experimental study of µ-atomic and µ-molecular processes in pure helium and deuterium-helium mixtures
| Autor: | Bystritsky, V. M., Boreiko, V. F., Czapli��ski, W., Filipowicz, M., Gerasimov, V. V., Huot, O., Knowles, P. E., Mulhauser, F., Pavlov, V. N., Popov, N. P., Schaller, L. A., Schneuwly, H., Sandukovsky, V. G., Stolupin, V. A., Volnykh, V. P., Wo��niak, J. |
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| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: | |
| Popis: | We present experimental results of $��$--atomic and $��$--molecular processes induced by negative muons in pure helium and helium--deuterium mixtures. The experiment was performed at the Paul Scherrer Institute (Switzerland). We measured muonic x--ray $K$ series transitions relative intensities in $(��^{3,4}\mathrm{He})^*$ atoms in pure helium as well as in helium--deuterium mixture. The muon stopping powers ratio between helium and deuterium atoms and the $d ��^3 \mathrm{He}$ radiative decay probability of for two different helium densities in $\mathrm{D}_2 + {}^3\mathrm{He}$ mixture were also determined. Finally, the $\mathrm{q}_{1s}^{\mathrm{He}}$ probability for a $d��$ atom formed in an excited state to reach the ground state was measured and compared with theoretical calculations using a simple cascade model. 15pages, 10 figures |
| Databáze: | OpenAIRE |
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