Coulomb chronometry to probe the decay mechanism of hot nuclei

D. Gruyer; J.D. Frankland; E. Bonnet; A. Chbihi; G Ademard; M. Boisjoli; B Borderie; R. Bougault; E Galichet; J Gauthier; D Guinet; P Lautesse; N. Le Neindre; E Legouée; I Lombardo; Olivier Lopez; L Manduci; P. Marini; K Mazurek; P. Nadtochy; M. Pârlog; M.F. Rivet; R. Roy; E Rosato; G Spadaccini; G Verde; E. Vient; M Vigilante; J.P. Wieleczko

doi:10.1103/PhysRevC.92.064606

Coulomb chronometry to probe the decay mechanism of hot nuclei

D. Gruyer ¹ J.D. Frankland ¹ E. Bonnet ¹ A. Chbihi ¹ G Ademard ² M. Boisjoli ¹ B Borderie ² R. Bougault ³ E Galichet ^{4, 2} J Gauthier ⁵ D Guinet ⁶ P Lautesse ⁶ N. Le Neindre ³ E Legouée ³ I Lombardo ^{7, 8} Olivier Lopez ³ L Manduci ⁹ P. Marini ¹ K Mazurek ¹⁰ P. Nadtochy ¹¹ M. Pârlog ³ M.F. Rivet ² R. Roy ⁵ E Rosato ^{8, 7} G Spadaccini ⁸ G Verde ^{12, 2} E. Vient ³ M Vigilante ^{8, 7} J.P. Wieleczko ¹

1 GANIL - Grand Accélérateur National d'Ions Lourds

2 IPNO - Institut de Physique Nucléaire d'Orsay

3 LPCC - Laboratoire de physique corpusculaire de Caen

4 CNAM Paris - Centre d'enseignement Cnam Paris

5 Université Laval

6 IPNL - Institut de Physique Nucléaire de Lyon

7 Università degli studi di Napoli Federico II

8 INFN, Sezione di Napoli - Istituto Nazionale di Fisica Nucleare, Sezione di Napoli

9 EAMEA - Ecole des Applications Militaires de l'Energie Atomique

10 H.Niewodniczanski Institute of Nuclear Physics

11 Omsk State University

12 INFN - Istituto Nazionale di Fisica Nucleare, Sezione di Catania

Abstract : In 129 Xe+ nat Sn central collisions from 8 to 25 MeV/A, the three-fragment exit channel occurs with a significant cross section. We show that these fragments arise from two successive binary splittings of a heavy composite system. The sequence of fragment production is determined. Strong Coulomb proximity effects are observed in the three-fragment final state. A comparison with Coulomb trajec-tory calculations shows that the time scale between the consecutive break-ups decreases with increasing bombarding energy, becoming quasi-simultaneous above excitation energy E * = 4.0±0.5 MeV/A. This transition from sequential to simultaneous break-up was interpreted as the signature of the onset of multifragmentation for the three-fragment exit channel in this system.

Keywords : sequential fission onset of multifragmentation incomplete fusion chronometer time scale low and intermediate energy multifragmentation threshold heavy-ion reactions three-fragment correlations

Type de document :

Article dans une revue

Physical Review C, American Physical Society, 2015, 92, pp.064606. 〈10.1103/PhysRevC.92.064606〉

Domaine :

Physique [physics] / Physique Nucléaire Expérimentale [nucl-ex]

Liste complète des métadonnées

http://hal.in2p3.fr/in2p3-00867220
Contributeur : Diego Gruyer <>
Soumis le : jeudi 19 novembre 2015 - 10:46:38
Dernière modification le : mercredi 14 novembre 2018 - 11:24:33
Document(s) archivé(s) le : vendredi 28 avril 2017 - 15:19:47

paper.pdf

Fichiers produits par l'(les) auteur(s)

Coulomb chronometry to probe the decay mechanism of hot nuclei

Fichiers

Identifiants

Collections

Citation

Exporter

Métriques

446

155

Contact

Coulomb chronometry to probe the decay mechanism of hot nuclei

Fichiers

Identifiants

Collections

Citation

Exporter

Partager

Métriques

446

155

Contact