Report
Excitation energy and strength of the pygmy dipole resonance in stable tin isotopes
| العنوان: | Excitation energy and strength of the pygmy dipole resonance in stable tin isotopes |
|---|---|
| المؤلفون: | Özel, B., Enders, J., Lenske, H., von Neumann-Cosel, P., Poltoratska, I., Ponomarev, V. Yu., Richter, A., Savran, D., Tsoneva, N. |
| سنة النشر: | 2009 |
| المجموعة: | Nuclear Experiment |
| مصطلحات موضوعية: | Nuclear Experiment |
| الوصف: | The $^{112,120}$Sn$(\gamma,\gamma')$ reactions have been studied at the S-DALINAC. Electric dipole (E1) strength distributions have been determined including contributions from unresolved strength extracted by a fluctuation analysis. Together with available data on $^{116,124}$Sn, an experimental systematics of the pygmy dipole resonance (PDR) in stable even-mass tin isotopes is established. The PDR centroid excitation energies and summed strengths are in reasonable agreement with quasiparticle-phonon model calculations based on a nonrelativistic description of the mean field but disagree with relativistic quasiparticle random-phase approximation predictions. Comment: submitted to Phys. Lett. B |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/0901.2443 |
| رقم الانضمام: | edsarx.0901.2443 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |