Vanderbrouck, M. and Matea, I. and Miriot-Jaubert, P. and Achouri, N. L. (2024) Study of the pygmy dipole resonance using neutron inelastic scattering at GANIL-SPIRAL2/NFS. Il nuovo cimento C, 47 (2). pp. 1-7. ISSN 1826-9885
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Abstract
The pygmy dipole resonance (PDR) has been the subject of numer- ous studies, both experimental and theoretical. Indeed, the study of the PDR has been and still is of great interest since it allows to constrain the symmetry energy, an important ingredient of the equation of state of nuclear matter that describes the matter within neutron stars. Moreover, the PDR is predicted to play a key role in the r-process via the increase of the neutron capture rate. However, despite numerous experiments dedicated to the study of the PDR, a consistent description is still missing. In this context, we have proposed to study the PDR using a new probe: the neutron inelastic scattering reaction (n,n’γ). An experiment to study the pygmy resonance in 140Ce using the (n,n’γ) reaction has been performed in Septem- ber 2022. This experiment has been made possible thanks to the high-intensity proton beam of the new accelerator SPIRAL2 at GANIL and the NFS (Neutron For Science) facility. The experimental setup was composed of the new generation multi-detectors PARIS, for the detection of γ-rays coming from the de-excitation of the PDR, and MONSTER, for the detection of scattered neutrons. In this article, the experiment motivation and description are presented.
| Item Type: | Article |
|---|---|
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 20 May 2024 14:11 |
| Last Modified: | 20 May 2024 14:11 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/22869 |
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