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Comparative study of four reactions at onset of pre-equilibrium emission

Authors :
F. Gramegna
Maurizio Bini
C. Frosin
D. Fabris
M. D'Agostino
Simone Valdré
Giovanni Casini
Nicla Gelli
G. Collazuol
V. L. Kravchuk
P. Ottanelli
Giacomo Poggi
Antonio Caciolli
Ivano Lombardo
A. Camaiani
Tommaso Marchi
M. Cinausero
D. Mengoni
B. Fornal
Diego Gruyer
Magda Cicerchia
Silvia Piantelli
Sandro Barlini
Gabriele Pasquali
G. Mantovani
S. Leoni
Luca Morelli
Alessandro Olmi
Daniele Dell’Aquila
M. Bruno
N. Cieplicka-Oryńczak
M. Degerlier
Grand Accélérateur National d'Ions Lourds (GANIL)
Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Source :
EPJ Web Conf., 4th International Conference on Nuclear Structure and Dynamics, 4th International Conference on Nuclear Structure and Dynamics, May 2019, Venice, Italy. pp.01010, ⟨10.1051/epjconf/201922301010⟩, EPJ Web of Conferences, Vol 223, p 01010 (2019)
Publication Year :
2019
Publisher :
HAL CCSD, 2019.

Abstract

The study of the emitted particles, comparing pre-equilibrium and thermal components, is a useful tool to examine the nuclear structure of emitters. Possible clustering effects, which may change the expected decay chain probability, could be highlighted on the competition between different reaction mechanisms. The NUCL-EX collaboration (INFN, Italy) has carried out an extensive research campaign on pre-equilibrium emission of light charged particles from hot nuclei. In this framework, the reactions 16O+30Si, 18O+28Si, 19F+27Al at 7 AMeV and 16O+30Si at 8 AMeV have been carried out using the GARFIELD+RCo array at Legnaro National Laboratories. Some anomalies in the α-particle emission channels have been evidenced in the measurement reported above, showing in an exclusive way the observed effects related to the entrance channels. The experimental results are compared to model prediction, for which the same filtering and complete event selection have been applied.

Details

Language :
English
Database :
OpenAIRE
Journal :
EPJ Web Conf., 4th International Conference on Nuclear Structure and Dynamics, 4th International Conference on Nuclear Structure and Dynamics, May 2019, Venice, Italy. pp.01010, ⟨10.1051/epjconf/201922301010⟩, EPJ Web of Conferences, Vol 223, p 01010 (2019)
Accession number :
edsair.doi.dedup.....91a44e0c1bb0d1cc4aaef4b2695e322c
Full Text :
https://doi.org/10.1051/epjconf/201922301010⟩