New isospin effects in central heavy-ion collisions at Fermi energies

被引：23

作者：

Gagnon-Moisan, F. ^{[1
,2
,4
]}

Galichet, E. ^{[1
,2
,3
]}

Rivet, M. -F. ^{[1
,2
]}

Borderie, B. ^{[1
,2
]}

Colonna, M. ^{[5
]}

Roy, R. ^{[4
]}

Ademard, G. ^{[1
,2
,6
]}

Boisjoli, M. ^{[4
,6
]}

Bonnet, E. ^{[6
]}

Bougault, R. ^{[7
]}

Chbihi, A. ^{[6
]}

Frankland, J. D. ^{[6
]}

Guinet, D. ^{[8
]}

Lautesse, P. ^{[8
]}

Legouee, E. ^{[7
]}

Le Neindre, N. ^{[7
]}

Manduci, L. ^{[6
,9
]}

Marini, P. ^{[6
]}

Napolitani, P. ^{[1
,2
]}

Parlog, M. ^{[7
,10
]}

Pawlowski, P. ^{[11
]}

Rosato, E. ^{[12
,13
]}

Vigilante, M. ^{[12
,13
]}

机构：

[1] CNRS IN2P3, Inst Phys Nucl, F-91406 Orsay, France

[2] Univ Paris Sud 11, F-91406 Orsay, France

[3] Conservatoire Natl Arts & Metiers, F-75141 Paris 03, France

[4] Univ Laval, Quebec City, PQ G1V 0A6, Canada

[5] Ist Nazl Fis Nucl, Lab Nazl Sud, I-95123 Catania, Italy

[6] CEA DSM CNRS IN2P3, GANIL, F-14076 Caen, France

[7] Univ Caen, CNRS IN2P3, ENSICAEN, LPC Caen, F-14050 Caen, France

[8] Univ Lyon, CNRS IN2P3, UCBL, Inst Phys Nucl, F-69622 Villeurbanne, France

[9] EAMEA, F-50115 Octeville, France

[10] Natl Inst Phys & Nucl Engn, RO-76900 Bucharest, Romania

[11] IFJ PAN, PL-31342 Krakow, Poland

[12] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy

[13] Univ Naples Federico II, Sez INFN, I-80126 Naples, Italy

来源：

PHYSICAL REVIEW C | 2012年 / 86卷 / 04期

关键词：

MULTIFRAGMENTATION; EXPANSION;

D O I：

10.1103/PhysRevC.86.044617

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Isospin effects on multifragmentation properties were studied thanks to nuclear collisions between different isotopes of xenon beams and tin targets. It is shown that, in central collisions leading to multifragmentation, the mean number of fragments and their mean kinetic energy increase with the neutron-richness of the total system. Comparisons with a stochastic transport model allow to attribute the multiplicity increase to the multifragmentation stage, before secondary decay. The total charge bound in fragments is proposed as an alternate variable to quantify preequilibrium emission and to investigate symmetry energy effects.

引用

页数：9

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