001     858261
005     20210129235907.0
024 7 _ |a 2128/20343
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037 _ _ |a FZJ-2018-07156
041 _ _ |a German
088 1 _ |a Juel-2991
088 _ _ |a Juel-2991
|2 JUEL
100 1 _ |a Körfgen, Bernd
|0 P:(DE-Juel1)132176
|b 0
|e Corresponding author
|u fzj
245 _ _ |a Pion- und photoninduzierte Reaktionen an Kernen im $\Delta$-Resonanzbereich
260 _ _ |a Jülich
|c 1994
|b Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
300 _ _ |a 95 p.
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336 7 _ |a TECHREPORT
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490 0 _ |a Berichte des Forschungszentrums Jülich
|v 2991
520 _ _ |a In the present work pion- and photoinduced nuclear reactions in the $\Delta$ resonance energy region are studied. In particular, we investigate the propagation of the $\Delta$ inside the nucleus. It is found that the propagation of the $\Delta$ in the medium can be interpreted in terms of a coherent pion wave. The behaviour of the $\Delta$ resonance in the nucleus is studied vy means of various inclusive and exclusive processes. These different reactions give complementary information on the properties of the $\Delta$ in nuclei. Elastic pion-scattering, coherent pion photoproduction and elastic Compton-scattering allow us to study the spin-longitudinal and spin-transverse channels, their their mixing and their influence on the coherent medium effect. The quasi-free decay reaction and the 2-nucleon.knockout reaction give information on the damping mechanisms of the coherent pion wave inside the nucleus. Additionally, they allow us to study the momentum distribution of the nucleons and the $\Delta$ in the nucleus. Our model describes consistently the pion- and potoinduced reactions as well as charge exchange reactions. [...]
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