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Quenching of the electron scattering form factor of the 1+ state at 3.48 MeV in88Sr and the influence of theΔ(1232)-isobar |
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| Authors: | L T van der Bijl H P Blok R Frey D Meuer A Richter P K A de Witt Huberts |
| Institution: | 1. Natuurkundig Laboratorium, Vrije Universiteit, Amsterdam, The Netherlands 2. Institut für Kernphysik, Technische Hochschule, Darmstadt, Federal Republic of Germany 4. Nationaal Instituut voor Kernfysica, Amsterdam, The Netherlands |
| Abstract: | The form factor for excitation of the 1+ state at 3.48 MeV in88Sr by inelastic electron scattering has been measured for momentum transfersq=0.24–0.62 fm?1. Neither its magnitude nor shape can be described employing the best available nuclear wave functions. We demonstrate with a schematic model that the observed reduction of the form factor may be understood by taking into account a renormalization of theM1-operator due to virtualΔ-hole excitations. |
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