Freeze-out properties of multifragmentation events

被引：29

作者：

Piantelli, S. ^{[1
,2
]}

Borderie, B. ^{[1
]}

Bonnet, E. ^{[1
]}

Le Neindre, N. ^{[1
]}

Raduta, Ad. R. ^{[1
,3
]}

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

Bougault, R. ^{[4
]}

Chbihi, A. ^{[5
,11
]}

Dayras, R. ^{[6
]}

Frankland, J. D. ^{[5
,11
]}

Galichet, E. ^{[1
,7
]}

Gagnon-Moisan, F. ^{[1
,8
]}

Guinet, D. ^{[9
,10
]}

Lautesse, P. ^{[9
,10
]}

Lehaut, G. ^{[4
]}

Lopez, O. ^{[4
]}

Mercier, D. ^{[4
,9
,10
]}

Moisan, J. ^{[5
,8
,11
]}

Parlog, M. ^{[3
]}

Rosato, E. ^{[12
]}

Roy, R.

Tamain, B. ^{[4
,13
]}

Vient, E. ^{[4
]}

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

Wieleczko, J. P. ^{[5
,11
]}

机构：

[1] Univ Paris 11, Inst Phys Nucl, CNRS, IN2P3, F-91406 Orsay, France

[2] Sezione Ist Nazl Fis Nucl, I-50019 Sesto Fiorentino, FI, Italy

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

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

[5] CEA, GANIL, F-4076 Caen, France

[6] CEA Saclay, IRFU SPhN, F-91191 Gif Sur Yvette, France

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

[8] Univ Laval, Phys Nucl Lab, Dept Phys Genie Phys & Opt, Ste Foy, PQ G1K 7P4, Canada

[9] Univ Lyon 1, Inst Phys Nucl, F-69622 Villeurbanne, France

[10] CNRS, IN2P3, F-69622 Villeurbanne, France

[11] CNRS, IN2P3, F-4076 Caen, France

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

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

来源：

NUCLEAR PHYSICS A | 2008年 / 809卷 / 3-4期

关键词：

NUCLEAR REACTIONS Sn-nat(Xe-129; X); E=32; 39; 45; 50; MeV/ncleon; central collisions; freeze-out properties estimated from fragment velocity distributions and charged panicle energy spectra; comparison with a microcanonical statistical model;

D O I：

10.1016/j.nuclphysa.2008.06.004

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：

Freeze-out properties of multifragmentation events produced in central Xe-129 + Sn-nat collisions at different beam energies (32, 39, 45 and 50 A MeV) were estimated by means of a simulation based on the experimental data collected by the 4 pi INDRA multidetector. A rapid increase (between 32 and 45 A MeV) of the fraction of particles emitted at freeze-out is deduced. The existence of a limitation of excitation energy for fragments around 3.0-3.5 A MeV is confirmed. A comparison with the results of a microcanonical statistical model is also performed to verify the overall physical coherence of the present approach. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：111 / 128

页数：18

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