Multifragmentation of very heavy nuclear systems (III):: Fragment velocity correlations and event topology at freeze-out

被引：26

作者：

Tabacaru, G

Rivet, MF ^{[1
]}

Borderie, B

Pârlog, M

Bouriquet, B

Chbihi, A

Frankland, JD

Wieleczko, JP

Bonnet, E

Bougault, R

Dayras, R

Galichet, E

Guinet, D

Lautesse, P

Le Neindre, N

Lopez, O

Manduci, L

Nalpas, L

Pawlowski, P

Rosato, E

Roy, R

Salou, S

Tamain, B

Vient, E

Vigilante, M

Volant, C

机构：

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

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

[3] CEA, GANIL, F-14076 Caen, France

[4] CNRS, IN2P3, F-14076 Caen, France

[5] ENSICAEN, CNRS, IN2P3, Lab Phys Corpusculaire Caen, F-14050 Caen, France

[6] Univ Caen, F-14050 Caen, France

[7] CEA Saclay, DAPNIA, SPhN, F-91191 Gif Sur Yvette, France

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

[9] CNRS, IN2P3, Inst Nucl Phys, F-69622 Villeurbanne, France

[10] Univ Villeurbanne, F-69622 Villeurbanne, France

[11] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

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

[13] Univ Laval, Dept Phys, Quebec City, PQ G1K 7P4, Canada

来源：

NUCLEAR PHYSICS A | 2006年 / 764卷

关键词：

NUCLEAR REACTIONS Sn(Xe-129; X); E=32; MeV/nucleon; U(Gd-155; E=36; measured fragments energy and charge distributions; yields; velocity correlations for central collisions; comparison to stochastic mean-field calculation; deduced freeze-out parameters;

D O I：

10.1016/j.nuclphysa.2005.08.019

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：

Kinetic energy spectra and fragment velocity correlations, simulated by means of stochastic mean-field calculations, are successfully confronted with experimental data for single multifragmenting sources prepared at the same excitation energy per nucleon in 32 A MeV Xe-129 + Sn-nat and 36 A MeV Gd-155 + U-nat central collisions. Relying thus Oil Simulations, average freeze-out times of 200-240 fm/c are estimated. The corresponding spatial distributions of fragments are more compact for the lighter system (similar to 3-4V(0) vs. similar to 8V(0)). (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：371 / 386

页数：16

共 53 条

[1] Recent light particle correlation data from heavy ion collisions at intermediate and low energies [J].

Ardouin, D .

INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS, 1997, 6 (03) :391-435

[2]

BAUER W, 1992, ANNU REV NUCL PART S, V42, P77

[3] Thermal excitation-energy deposition in 5-15 GeV/c hadron-induced reactions with 197Au.: II.: Relation between excitation energy and reaction variables -: art. no. 064604 [J].

Beaulieu, L ;

Lefort, T ;

Kwiatkowski, K ;

Hsi, WC ;

Wang, G ;

Bracken, DS ;

Cornell, E ;

Ginger, DS ;

Morley, KB ;

Viola, WE ;

Gimeno-Nogues, F ;

Laforest, R ;

Martin, E ;

Ramakrishnan, E ;

Rowland, D ;

Ruangma, A ;

Winchester, E ;

Yennello, SJ ;

Korteling, RG ;

Pienkowski, L ;

Breuer, H ;

Back, B ;

Gushue, S ;

Remsberg, LR ;

Huang, MJ ;

Lynch, WG ;

Tsang, MB ;

Xi, H .

PHYSICAL REVIEW C, 2001, 64 (06) :646041-6460411

[4] NUCLEAR FRAGMENTATION [J].

BERTSCH, G ;

SIEMENS, PJ .

PHYSICS LETTERS B, 1983, 126 (1-2) :9-12

[5] Evidence for spinodal decomposition in nuclear multifragmentation [J].

Borderie, B ;

Tabacaru, G ;

Chomaz, P ;

Colonna, M ;

Guarnera, A ;

Pârlog, M ;

Rivet, MF ;

Auger, G ;

Bacri, CO ;

Bellaize, N ;

Bougault, R ;

Bouriquet, B ;

Brou, R ;

Buchet, P ;

Chbihi, A ;

Colin, J ;

Demeyer, A ;

Galichet, E ;

Gerlic, E ;

Guinet, D ;

Hudan, S ;

Lautesse, P ;

Lavaud, F ;

Laville, JL ;

Lecolley, JF ;

Leduc, C ;

Legrain, R ;

Le Neindre, N ;

Lopez, O ;

Louvel, M ;

Maskay, AM ;

Normand, J ;

Pawlowski, P ;

Rosato, E ;

Saint-Laurent, F ;

Steckmeyer, JC ;

Tamain, B ;

Tassan-Got, L ;

Vient, E ;

Wieleczko, JP .

PHYSICAL REVIEW LETTERS, 2001, 86 (15) :3252-3255

[6] Dynamics and thermodynamics of the liquid-gas phase transition in hot nuclei studied with the INDRA array [J].

Borderie, B .

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 2002, 28 (08) :R217-R247

[7]

BOUGAULT R, 1999, P 27 INT WORKSH GROS, P24

[8] SOURCES AND EMISSION TIME SCALES IN E/A = 50-MEV XE-129 PLUS (NAT)CU REACTIONS [J].

BOWMAN, DR ;

PEASLEE, GF ;

CARLIN, N ;

DESOUZA, RT ;

GELBKE, CK ;

GONG, WG ;

KIM, YD ;

LISA, MA ;

LYNCH, WG ;

PHAIR, L ;

TSANG, MB ;

WILLIAMS, C ;

COLONNA, N ;

HANOLD, K ;

MCMAHAN, MA ;

WOZNIAK, GJ ;

MORETTO, LG .

PHYSICAL REVIEW LETTERS, 1993, 70 (23) :3534-3537

[9] FLUCTUATIONS IN NUCLEAR-DYNAMICS - FROM TRANSPORT-THEORY TO DYNAMIC SIMULATION [J].

BURGIO, GF ;

CHOMAZ, P ;

RANDRUP, J .

NUCLEAR PHYSICS A, 1991, 529 (01) :157-189

[10] N-Z distributions of secondary fragments and the evaporation attractor line [J].

Charity, RJ .

PHYSICAL REVIEW C, 1998, 58 (02) :1073-1077

← 1 2 3 4 5 6 →